[libpng16] Bump version to 1.6.17beta02

ANNOUNCE

@@ -1,4 +1,4 @@
-Libpng 1.6.17beta01 - January 27, 2015
+Libpng 1.6.17beta02 - January 29, 2015
 
 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.
@@ -8,24 +8,24 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.6.17beta01.tar.xz (LZMA-compressed, recommended)
-   1.6.17beta01.tar.gz
+   1.6.17beta02.tar.xz (LZMA-compressed, recommended)
+   1.6.17beta02.tar.gz
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp1617b01.7z  (LZMA-compressed, recommended)
-   lp1617b01.zip
+   lp1617b02.7z  (LZMA-compressed, recommended)
+   lp1617b02.zip
 
 Other information:
 
-   1.6.17beta01-README.txt
-   1.6.17beta01-LICENSE.txt
-   libpng-1.6.17beta01-*.asc (armored detached GPG signatures)
+   1.6.17beta02-README.txt
+   1.6.17beta02-LICENSE.txt
+   libpng-1.6.17beta02-*.asc (armored detached GPG signatures)
 
 Changes since the last public release (1.6.16):
 
-Version 1.6.17beta01 [January 27, 2015]
+Version 1.6.17beta01 [January 29, 2015]
   Removed duplicate PNG_SAFE_LIMITS_SUPPORTED handling from pngconf.h
   Corrected the width limit calculation in png_check_IHDR().
   Removed user limits from pngfix. Also pass NULL pointers to
@@ -40,6 +40,8 @@ Version 1.6.17beta01 [January 27, 2015]
   Added #ifndef __COVERITY__ where needed in png.c, pngrutil.c and
     pngset.c to avoid warnings about dead code.
 
+Version 1.6.17beta02 [January 29, 2015]
+
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