[libpng16] Bump version to 1.6.7rc03

ANNOUNCE

@@ -1,5 +1,5 @@
 
-Libpng 1.6.7rc02 - November 7, 2013
+Libpng 1.6.7rc03 - November 7, 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
 
-   1.6.7rc02.tar.xz (LZMA-compressed, recommended)
-   1.6.7rc02.tar.gz
+   1.6.7rc03.tar.xz (LZMA-compressed, recommended)
+   1.6.7rc03.tar.gz
 
 Source files with CRLF line endings (for Windows), without the
 "configure" script
 
-   lp167r02.7z  (LZMA-compressed, recommended)
-   lp167r02.zip
+   lp167r03.7z  (LZMA-compressed, recommended)
+   lp167r03.zip
 
 Other information:
 
-   1.6.7rc02-README.txt
-   1.6.7rc02-LICENSE.txt
+   1.6.7rc03-README.txt
+   1.6.7rc03-LICENSE.txt
    Gnupg/*.asc (PGP armored detached signatures)
 
 Changes since the last public release (1.6.6):
@@ -97,6 +97,8 @@ Version 1.6.7rc02 [November 7, 2013]
   Fixed #include in filter_neon_intrinsics.c and ctype macros. The ctype char
     checking macros take an unsigned char argument, not a signed char.
 
+Version 1.6.7rc03 [November 7, 2013]
+
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