[libpng15] Imported from libpng-1.5.8rc01.tar

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.5.8beta01 - December 21, 2011
+Libpng 1.5.8rc01 - January 21, 2012
 
 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.
@@ -9,26 +9,30 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.5.8beta01.tar.xz (LZMA-compressed, recommended)
-   1.5.8beta01.tar.gz
-   1.5.8beta01.tar.bz2
+   1.5.8rc01.tar.xz (LZMA-compressed, recommended)
+   1.5.8rc01.tar.gz
+   1.5.8rc01.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp158b01.7z  (LZMA-compressed, recommended)
-   lp158b01.zip
+   lp158r01.7z  (LZMA-compressed, recommended)
+   lp158r01.zip
 
 Other information:
 
-   1.5.8beta01-README.txt
-   1.5.8beta01-LICENSE.txt
+   1.5.8rc01-README.txt
+   1.5.8rc01-LICENSE.txt
 
 Changes since the last public release (1.5.7):
 
-Version 1.5.8beta01 [December 21, 2011]
+Version 1.5.8beta01 [January 21, 2012]
   Removed '#include config.h"' from contrib/libtests/pngvalid.c.  It's not
     needed and causes trouble for VPATH building.
+  Moved AC_MSG_CHECKING([if libraries can be versioned]) later to the proper
+    location in configure.ac (Gilles Espinasse).
+  Fix bug in pngerror.c: some long warnings were being improperly truncated
+    (bug introduced in libpng-1.5.3beta05).
 
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