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, 3 insertions, 3 deletions

diff --git a/allchblk.c b/allchblk.c
index 9afa878e..25e11a46 100644
--- a/allchblk.c
+++ b/allchblk.c
@@ -735,7 +735,7 @@ GC_allochblk_nth(size_t sz, int kind, unsigned flags, int n, int may_split)
 
                   /* The block is completely blacklisted.  We need      */
                   /* to drop some such blocks, since otherwise we spend */
-                  /* all our time traversing them if pointerfree        */
+                  /* all our time traversing them if pointer-free       */
                   /* blocks are unpopular.                              */
                   /* A dropped block will be reconsidered at next GC.   */
                   if ((++count & 3) == 0) {
@@ -800,8 +800,8 @@ GC_allochblk_nth(size_t sz, int kind, unsigned flags, int n, int may_split)
         }
 #   ifndef GC_DISABLE_INCREMENTAL
         /* Notify virtual dirty bit implementation that we are about to */
-        /* write.  Ensure that pointerfree objects are not protected if */
-        /* it's avoidable.  This also ensures that newly allocated      */
+        /* write.  Ensure that pointer-free objects are not protected   */
+        /* if it is avoidable.  This also ensures that newly allocated  */
         /* blocks are treated as dirty.  Necessary since we don't       */
         /* protect free blocks.                                         */
         GC_ASSERT((size_needed & (HBLKSIZE-1)) == 0);