Fix typos throughout codebase.

* NEWS:
* doc/ref/api-control.texi:
* doc/ref/api-data.texi:
* doc/ref/api-debug.texi:
* doc/ref/api-deprecated.texi:
* doc/ref/api-evaluation.texi:
* doc/ref/api-foreign.texi:
* doc/ref/api-i18n.texi:
* doc/ref/api-io.texi:
* doc/ref/api-languages.texi:
* doc/ref/api-macros.texi:
* doc/ref/api-memory.texi:
* doc/ref/api-modules.texi:
* doc/ref/api-options.texi:
* doc/ref/api-peg.texi:
* doc/ref/api-procedures.texi:
* doc/ref/api-scheduling.texi:
* doc/ref/api-undocumented.texi:
* doc/ref/api-utility.texi:
* doc/ref/expect.texi:
* doc/ref/goops.texi:
* doc/ref/misc-modules.texi:
* doc/ref/posix.texi:
* doc/ref/repl-modules.texi:
* doc/ref/scheme-ideas.texi:
* doc/ref/scheme-scripts.texi:
* doc/ref/srfi-modules.texi:
* gc-benchmarks/larceny/dynamic.sch:
* gc-benchmarks/larceny/twobit-input-long.sch:
* gc-benchmarks/larceny/twobit.sch:
* libguile/gc.h:
* libguile/ioext.c:
* libguile/list.c:
* libguile/options.c:
* libguile/posix.c:
* libguile/threads.c:
* module/ice-9/boot-9.scm:
* module/ice-9/optargs.scm:
* module/ice-9/ports.scm:
* module/ice-9/pretty-print.scm:
* module/ice-9/psyntax.scm:
* module/language/elisp/parser.scm:
* module/language/tree-il/compile-bytecode.scm:
* module/srfi/srfi-37.scm:
* module/srfi/srfi-43.scm:
* module/statprof.scm:
* module/texinfo/reflection.scm:
* test-suite/tests/eval.test:
* test-suite/tests/fluids.test:
Fix typos.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gc-benchmarks/larceny/dynamic.sch

@@ -884,7 +884,7 @@
   ; uses union/find elements with two info fields
   ; a type variable has exactly four fields:
   ; car:     TVar (the parent field; initially null)
-  ; cadr:    Number (the rank field; is always nonnegative)
+  ; cadr:    Number (the rank field; is always non-negative)
   ; caddr:   Symbol (the type variable identifier; used only for printing)
   ; cdddr:   Type (the leq field; initially null)
   (gen-element (cons (gen-id) '())))

gc-benchmarks/larceny/twobit-input-long.sch

@@ -16067,7 +16067,7 @@
 ; Returns a length-4 bytevector.
 ;
 ; M may be an exact integer or a length-4 bytevector.
-; N must be an exact nonnegative integer; it's interpreted modulo 33.
+; N must be an exact non-negative integer; it's interpreted modulo 33.
 
 (define (asm:lsh m n)
   (if (not (bytevector? m))
@@ -16098,7 +16098,7 @@
 ; Returns a length-4 bytevector.
 ;
 ; M may be an exact integer or a length-4 bytevector.
-; N must be an exact nonnegative integer; it's interpreted modulo 33.
+; N must be an exact non-negative integer; it's interpreted modulo 33.
 
 (define (asm:rshl m n)
   (if (not (bytevector? m))
@@ -16129,7 +16129,7 @@
 ; high end.  Returns a length-4 bytevector.
 ;
 ; M may be an exact integer or a length-4 bytevector.
-; N must be an exact nonnegative integer; it's interpreted modulo 33.
+; N must be an exact non-negative integer; it's interpreted modulo 33.
 
 (define asm:rsha
   (let ((ones (asm:bv #xff #xff #xff #xff)))
@@ -16240,7 +16240,7 @@
 
 ; Extract the n low-order bits of m.
 ; m may be an exact integer or a length-4 bytevector.
-; n must be an exact nonnegative integer, interpreted modulo 32.
+; n must be an exact non-negative integer, interpreted modulo 32.
 ; Returns length-4 bytevector.
 ;
 ; Does not depend on endian-ness.
@@ -16255,7 +16255,7 @@
 
 ; Extract the n high-order bits of m.
 ; m may be an exact integer or a length-4 bytevector.
-; n must be an exact nonnegative integer, interpreted modulo 33.
+; n must be an exact non-negative integer, interpreted modulo 33.
 ; Returns length-4 bytevector with the high-order bits of m at low end.
 ;
 ; Does not depend on endian-ness.
@@ -16553,7 +16553,7 @@
 ;
 ;  version          a fixnum (constant) - heap type version number
 ;  roots            an assoc list that maps root names to values
-;  top              an exact nonnegative integer: the address of the 
+;  top              an exact non-negative integer: the address of the
 ;                   next byte to be emitted
 ;  symbol-table     a symbol table abstract data type
 ;  extra            any value - a client-extension field
@@ -20735,7 +20735,7 @@
 
 ; Strings
 
-; RESULT must have nonnegative fixnum.
+; RESULT must have non-negative fixnum.
 ; RS2 must have character.
 
 (define-primop 'make-string
@@ -23056,7 +23056,7 @@
 ; A `decoded-instruction' is a list where the car is a mnemonic and
 ; the operands are appropriate for that mnemonic.
 ;
-; A `mnemonic' is an exact nonnegative integer.  It encodes the name of
+; A `mnemonic' is an exact non-negative integer.  It encodes the name of
 ; the instruction as well as its attributes (operand pattern and instruction
 ; type).  See below for specific operations on mnemonics.
 

gc-benchmarks/larceny/twobit.sch

@@ -16067,7 +16067,7 @@
 ; Returns a length-4 bytevector.
 ;
 ; M may be an exact integer or a length-4 bytevector.
-; N must be an exact nonnegative integer; it's interpreted modulo 33.
+; N must be an exact non-negative integer; it's interpreted modulo 33.
 
 (define (asm:lsh m n)
   (if (not (bytevector? m))
@@ -16098,7 +16098,7 @@
 ; Returns a length-4 bytevector.
 ;
 ; M may be an exact integer or a length-4 bytevector.
-; N must be an exact nonnegative integer; it's interpreted modulo 33.
+; N must be an exact non-negative integer; it's interpreted modulo 33.
 
 (define (asm:rshl m n)
   (if (not (bytevector? m))
@@ -16129,7 +16129,7 @@
 ; high end.  Returns a length-4 bytevector.
 ;
 ; M may be an exact integer or a length-4 bytevector.
-; N must be an exact nonnegative integer; it's interpreted modulo 33.
+; N must be an exact non-negative integer; it's interpreted modulo 33.
 
 (define asm:rsha
   (let ((ones (asm:bv #xff #xff #xff #xff)))
@@ -16240,7 +16240,7 @@
 
 ; Extract the n low-order bits of m.
 ; m may be an exact integer or a length-4 bytevector.
-; n must be an exact nonnegative integer, interpreted modulo 32.
+; n must be an exact non-negative integer, interpreted modulo 32.
 ; Returns length-4 bytevector.
 ;
 ; Does not depend on endian-ness.
@@ -16255,7 +16255,7 @@
 
 ; Extract the n high-order bits of m.
 ; m may be an exact integer or a length-4 bytevector.
-; n must be an exact nonnegative integer, interpreted modulo 33.
+; n must be an exact non-negative integer, interpreted modulo 33.
 ; Returns length-4 bytevector with the high-order bits of m at low end.
 ;
 ; Does not depend on endian-ness.
@@ -16553,7 +16553,7 @@
 ;
 ;  version          a fixnum (constant) - heap type version number
 ;  roots            an assoc list that maps root names to values
-;  top              an exact nonnegative integer: the address of the 
+;  top              an exact non-negative integer: the address of the
 ;                   next byte to be emitted
 ;  symbol-table     a symbol table abstract data type
 ;  extra            any value - a client-extension field
@@ -20735,7 +20735,7 @@
 
 ; Strings
 
-; RESULT must have nonnegative fixnum.
+; RESULT must have non-negative fixnum.
 ; RS2 must have character.
 
 (define-primop 'make-string
@@ -23056,7 +23056,7 @@
 ; A `decoded-instruction' is a list where the car is a mnemonic and
 ; the operands are appropriate for that mnemonic.
 ;
-; A `mnemonic' is an exact nonnegative integer.  It encodes the name of
+; A `mnemonic' is an exact non-negative integer.  It encodes the name of
 ; the instruction as well as its attributes (operand pattern and instruction
 ; type).  See below for specific operations on mnemonics.