Fixes the following warning on gcc-4.8.1:
version.c:13:13: warning: function might be candidate for attribute 'const' [-Wsuggest-attribute=const]
* \return The string generated by the GIT-VERSION-GEN script. It is passed
* as a preprocessor define during compilation.
*/
* \return The string generated by the GIT-VERSION-GEN script. It is passed
* as a preprocessor define during compilation.
*/
-const char *version_git(void)
+__a_const const char *version_git(void)