* test-suite/Makefile.am:
* test-suite/tests/brainfuck.test: Add a brainfuck test.
* module/system/base/compile.scm: Also export read-and-compile.
* module/language/tree-il/spec.scm (join): Fix the joiner in the
0-expression case.
* module/language/tree-il/primitives.scm (+): Recognize (+ x -1) as 1-.
* module/language/brainfuck/parse.scm (read-brainfuck): Return EOF if we
actually received EOF, and there were no expressions read.
* module/language/brainfuck/compile-tree-il.scm (compile-body): Fix the
compiler for the new format of "lambda" in tree-il.
* module/Makefile.am (BRAINFUCK_LANG_SOURCES): Compile at the end. Add
compile-tree-il.scm.
* module/language/brainfuck/compile-tree-il.scm: New compiler, compiles
to tree-il instead of scheme. I thought it would be more illustrative,
though there are some uncommented bits.
* module/language/brainfuck/parse.scm: Modify not to put a header on the
scheme representation. After all, we don't put <scheme> before scheme
code, do we? :)
* module/language/brainfuck/spec.scm: Add tree-il compiler.
* module/language/tree-il.scm: Understand (set! (lexical foo) ...).
* module/system/base/language.scm: Update license. Actually, updates
licenses on all these.
* doc/ref/compiler.texi: Mention the new brainfuck compiler as an example.
* module/language/brainfuck/compile-scheme.scm: Add a lot of documentation comments.
* module/language/brainfuck/parse.scm: Ditto.
* module/language/brainfuck/spec.scm: Ditto.
* module/Makefile.am: Install the brainfuck compiler modules.
* module/language/brainfuck/spec.scm: New file.
* module/language/brainfuck/parse.scm: New file.
* module/language/brainfuck/compile-scheme.scm: New file.
