[libpng14] Bump version to 1.4.13beta01

ANNOUNCE

@@ -1,34 +1,39 @@
 
-Libpng 1.4.12 - July 10, 2012
+Libpng 1.4.13beta01 - July 14, 2012
 
-This is a public release of libpng, intended for use in production codes.
+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.
 
 Files available for download:
 
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   libpng-1.4.12.tar.xz (LZMA-compressed, recommended)
-   libpng-1.4.12.tar.gz
-   libpng-1.4.12.tar.bz2
+   1.4.13beta01.tar.xz (LZMA-compressed, recommended)
+   1.4.13beta01.tar.gz
+   1.4.13beta01.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lpng1412.7z (LZMA-compressed, recommended)
-   lpng1412.zip
+   lp1413b01.7z (LZMA-compressed, recommended)
+   lp1413b01.zip
 
 Other information:
 
-   libpng-1.4.12-README.txt
-   libpng-1.4.12-LICENSE.txt
+   1.4.13beta01-README.txt
+   1.4.13beta01-LICENSE.txt
 
 Changes since the last public release (1.4.11):
+
+version 1.4.12 [July 10, 2012]
   Added two images to contrib/pngsuite (1-bit and 2-bit transparent grayscale),
     and renamed three whose names were inconsistent with those in
     pngsuite/README.txt.
   Changed "a+w" to "u+w" in Makefile.in to fix CVE-2012-3386.
 
+version 1.4.13beta01 [July 14, 2012]
+
 Send comments/corrections/commendations to glennrp at users.sourceforge.net
 or to png-mng-implement at lists.sf.net (subscription required; visit
 https://lists.sourceforge.net/lists/listinfo/png-mng-implement).