Fix more typos in comments and documentation

* alloc.c: Fix typo ("overflow").
* configure.ac: Fix typo ("optimization").
* doc/README.amiga: Fix typos ("also", "specific", "unnecessary").
* doc/README.cords: Fix typos ("descendants", "highlighted").
* ChangeLog: Fix typos ("[un]collectible").
* README.md: Likewise.
* dbg_mlc.c: Likewise.
* doc/README.hp: Likewise.
* doc/README.linux: Likewise.
* doc/gcdescr.html: Likewise.
* doc/gcinterface.html: Likewise.
* include/gc_mark.h: Likewise.
* include/gc_pthread_redirects.h: Likewise.
* include/new_gc_alloc.h: Likewise.
* include/private/dbg_mlc.h: Likewise.
* include/private/gc_pmark.h: Likewise.
* include/private/gc_priv.h: Likewise.
* new_hblk.c: Likewise.
* ChangeLog: Fix typo ("multi-threaded").
* cord/cordxtra.c: Likewise.
* doc/debugging.html: Likewise.
* doc/gcinterface.html: Likewise.
* doc/leak.html: Likewise.
* doc/overview.html: Likewise.
* doc/simple_example.html: Likewise.
* include/gc_mark.h: Likewise.
* include/private/gc_priv.h: Likewise.
* os_dep.c: Likewise.
* ptr_chck.c: Likewise.
* README.md: Fix typo ("pointer-free").
* allchblk.c: Likewise.
* doc/debugging.html: Likewise.
* doc/gcdescr.html: Likewise.

1 files changed, 5 insertions, 8 deletions

diff --git a/new_hblk.c b/new_hblk.c
index e2992d44..05c4abff 100644
--- a/new_hblk.c
+++ b/new_hblk.c
@@ -164,16 +164,13 @@ GC_INNER ptr_t GC_build_fl(struct hblk *h, size_t sz, GC_bool clear,
     return ((ptr_t)p);
 }
 
-/*
- * Allocate a new heapblock for small objects of size gran granules.
- * Add all of the heapblock's objects to the free list for objects
- * of that size.
- * Set all mark bits if objects are uncollectable.
- * Will fail to do anything if we are out of memory.
- */
+/* Allocate a new heapblock for small objects of size gran granules.    */
+/* Add all of the heapblock's objects to the free list for objects      */
+/* of that size.  Set all mark bits if objects are uncollectible.       */
+/* Will fail to do anything if we are out of memory.                    */
 GC_INNER void GC_new_hblk(size_t gran, int kind)
 {
-  struct hblk *h;       /* the new heap block                   */
+  struct hblk *h;       /* the new heap block */
   GC_bool clear = GC_obj_kinds[kind].ok_init;
 
   GC_STATIC_ASSERT((sizeof (struct hblk)) == HBLKSIZE);