[ccache] ccache 2.3 released

[tridge at samba.org]

I've just released ccache 2.3. Grab it from http://ccache.samba.org/

Major changes:

 * Added CCACHE_UMASK option
 * Added support for compilation of .i files
 * Fixed bug with DEPENDENCIES_OUTPUT flag
 * Added support for more -Mx options
 * Added separate stderr channel for distcc
 * Improved test suite

Cheers, Tridge