[libpng17] Bump version to 1.7.0beta14

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.7.0beta13 - May 13, 2013
+Libpng 1.7.0beta14 - May 13, 2013
 
 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.
@@ -9,19 +9,19 @@ Files available for download:
 Source files with LF line endings (for Unix/Linux) and with a
 "configure" script
 
-   1.7.0beta13.tar.xz (LZMA-compressed, recommended)
-   1.7.0beta13.tar.gz
+   1.7.0beta14.tar.xz (LZMA-compressed, recommended)
+   1.7.0beta14.tar.gz
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp170b13.7z  (LZMA-compressed, recommended)
-   lp170b13.zip
+   lp170b14.7z  (LZMA-compressed, recommended)
+   lp170b14.zip
 
 Other information:
 
-   1.7.0beta13-README.txt
-   1.7.0beta13-LICENSE.txt
+   1.7.0beta14-README.txt
+   1.7.0beta14-LICENSE.txt
 
 Changes since the last public release (1.6.0):
 
@@ -275,7 +275,7 @@ Version 1.7.0beta12 [April 30, 2013]
   Avoid dereferencing NULL pointer possibly returned from
      png_create_write_struct() (Andrew Church).
 
-Version 1.7.0beta13 [May 13, 2013]
+Version 1.7.0beta13 [May 12, 2013]
   Revised contrib/pngminim/*/makefile to generate pnglibconf.h with the
     right zlib header files.
   Separated CPPFLAGS and CFLAGS in contrib/pngminim/*/makefile
@@ -304,6 +304,8 @@ Version 1.7.0beta13 [May 13, 2013]
   Added information in the documentation about problems with and fixes for
     the bad CRC and bad iTXt chunk situations.
 
+Version 1.7.0beta14 [May 13, 2013]
+
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