Have source properties only use regular GC mechanisms.

Have source properties only use regular GC mechanisms.

* libguile/srcprop.c: Include "libguile/gc.h".
  (srcprops_chunklist): Removed.
  (srcprops_freelist): Removed.
  (srcprops_free): Removed.
  (scm_make_srcprops): Use `scm_gc_malloc ()' rather than
  SRCPROPS_FREELIST et al.
  (scm_init_srcprop): Don't call `scm_set_smob_free ()'.
  (scm_finish_srcprop): Do nothing.

* libguile/srcprop.h (SRCPROPS_CHUNKSIZE): Removed.
  (scm_t_srcprops_chunk): Removed.

git-archimport-id: lcourtes@laas.fr--2005-libre/guile-core--boehm-gc--1.9--patch-45