Imported from libpng-1.2.6rc1.tar

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.2.6beta4 - July 28, 2004
+Libpng 1.2.6rc1 - August 4, 2004
 
 This is not intended to be a public release.  It will be replaced
 within a few weeks by a public version or by another test version.
@@ -76,9 +76,24 @@ Changes since the last public release (1.2.5):
   Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4.
   Revised Borland portion of png_malloc() to return NULL or issue
     png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK.
+  Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove
+    sequential read support.
+  Added some "#if PNG_WRITE_SUPPORTED" blocks.
+  #ifdef'ed out some redundancy in png_malloc_default().
+  Use png_malloc instead of png_zalloc to allocate the pallete.
+  Rearranged order of processing of color types in png_handle_tRNS().
+  Added PNG_ROWBYTES macro to calculate rowbytes without integer overflow.
+  Updated makefile.darwin and removed makefile.macosx from scripts directory.
+  Imposed default one million column, one-million row limits on the image
+    dimensions, and added png_set_user_limits() function and
+    PNG_SET_USER_LIMITS_SUPPORTED macro to override them..
+  Fixed wrong cast of returns from png_get_user_width|height_max().
+  Fixed buffer overflow vulnerability in png_handle_tRNS()
+  Fixed integer arithmetic overflow vulnerability in png_read_png().
+  Fixed some harmless bugs in png_handle_sBIT, etc, that would cause
+    duplicate chunk types to go undetected.
 
 Send comments/corrections/commendations to
 png-implement@ccrc.wustl.edu or to glennrp@users.sourceforge.net
 
 Glenn R-P
-