* unif.c (scm_uniform_array_write): likewise.
* ioext.c (scm_redirect_port): likewise.
* ports.c (scm_putc): call scm_read_flush.
(scm_puts): likewise.
(scm_lfwrite): likewise.
(scm_lseek): likewise.
(scm_ftruncate): likewise.
* ports.c (scm_fill_buffer): don't take pt argument. change callers.
(read_flush_void_port): new proc, for void port ptob.
* vports.c (sf_read_flush): likewise.
* strports.c (st_read_flush): take offset arg.
* fports.c (local_read_flush): use offset, don't reset putback
buffer here.
* ports.h (scm_ptobfuns): let read_flush take an offset argument,
which is the number of chars from the putback buffer.
* ports.c (scm_read_flush): new procedure, resets the putback
buffer before calling the ptob routine.
at multiple calls to read.
(promtp2): Variable for continued-lines prompt.
(make-readline-port): Use prompt2.
(set-readline-prompt!): New optional arg which sets
continued-lines prompt.
(scm_struct_i_free): New hidden struct slot. Holds destructor for
instances to this vtable.
(scm_struct_free_0): New destructor: Doesn't deallocate data.
(scm_struct_free_light): New destructor: Deallocates a light
struct (i.e. a struct without hidden slots).
(scm_struct_free_standard): New destructor: Deallocates standard
structs.
(scm_struct_free_entity): New destructor: Deallocates entity
structs.
(SCM_SET_VTABLE_DESTRUCTOR): New macro.
Changes to hidden slots:
(scm_struct_i_size): scm_struct_i_flags now shares space with
scm_struct_i_size which holds the size of light structs.
(scm_struct_i_n_words): This slot has changed meaning. Previously
it included hidden slots. Now it indicates visible slots.
(scm_alloc_struct): Clear flags.
(SCM_STRUCTF_MASK): 4 new flag positions added => 12 bits.
(struct_num, scm_struct_i_tag): Removed.
(scm_struct_vtable_tag): Base tag on the pointer to mallocated
memory.
(scm_struct_ihashq): Base hash value on pointer to struct handle.
(sysdep_dynl_link): Added `flags' argument.
(kw_global, sym_global): New.
(scm_dynamic_link): Handle keyword arguments. Pass suitable flags
to sysdep_dynl_link.
* dynl-dl.c (sysdep_dynl_link): Handle new `flags' argument by
conditrionally adding RTLD_GLOBAL to DLOPEN_MODES.
* dynl-shl.c (sysdep_dynl_link): Add and ignore new flags
argument.
* dynl-dld.c (sysdep_dynl_link): Add and ignore new flags
argument.
* dynl.h (scm_dynamic_link): Added rest argument.
* dynl.c (sysdep_dynl_unlink, sysdep_dynl_func): Use const
qualifier for char* argument, to match prototypes. Thanks to Mark
Elbrecht.
* eq.c, eval.c, list.c, ramap.c, vectors.c: Always write parens
around the condition of an `if', `while', etc., even if the
condition is a macro invocation that expands to something
surrounded by parens. It's more readable.
chaining the live guardians in a single-linked list during the GC
mark phase.
(GUARDIAN_NEXT): convenience macro to access the `next' field.
(guardians, guardians_size, n_guardians): deleted.
(first_live_guardian, current_link_field): new globals used to
point to the head of the live guardian list and current `next'
field, respectively.
(g_mark): append the guardian to the live guardian list.
(scm_guardian_gc_init): zero the live guardian list.
(scm_guardian_zombify): iterate through the live guardian list.
