[master] Bump to version 1.4.5beta02

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.4.5beta01 - September 25, 2010
+Libpng 1.4.5beta02 - September 25, 2010
 
 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.
@@ -9,20 +9,20 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.4.5beta01.tar.xz (LZMA-compressed, recommended)
-   1.4.5beta01.tar.gz
-   1.4.5beta01.tar.bz2
+   1.4.5beta02.tar.xz (LZMA-compressed, recommended)
+   1.4.5beta02.tar.gz
+   1.4.5beta02.tar.bz2
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp145b01.zip
-   lp145b01.7z
+   lp145b02.zip
+   lp145b02.7z
 
 Other information:
 
-   1.4.5beta01-README.txt
-   1.4.5beta01-LICENSE.txt
+   1.4.5beta02-README.txt
+   1.4.5beta02-LICENSE.txt
 
 Changes since the last public release (1.4.4):
 
@@ -30,6 +30,8 @@ version 1.4.5beta01 [September 25, 2010]
   Fixed possible configure.ac bug introduced in version 1.4.4rc05.
   Rebuilt configure scripts with autoconf-2.68 instead of autoconf-2.65
 
+version 1.4.5beta02 [September 25, 2010]
+
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