Prepare for v3.1.5

AUTHORS.txt

@@ -10,6 +10,7 @@ ccache is a collective work with contributions from many people, including:
 * Andrew Tridgell <tridge@samba.org>
 * Bernhard Bauer <bauerb@google.com>
 * Björn Jacke <bj@sernet.de>
+* Bo Rydberg <bolry@hotmail.com>
 * Clemens Rabe <crabe@gmx.de>
 * Francois Marier <francois@debian.org>
 * Joel Rosdahl <joel@rosdahl.net>

NEWS.txt

@@ -2,6 +2,35 @@ ccache news
 ===========
 
 
+ccache 3.1.5
+------------
+Release date: 2011-05-29
+
+
+New features and improvements
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+    - Added a new statistics counter named ``called for preprocessing''.
+    - The original command line is now logged to the file specified with
+      `CCACHE_LOGFILE`.
+    - Improved error logging when system calls fail.
+    - Added support for rewriting absolute paths in `-F`/`-iframework` GCC
+      options.
+    - Improved order of statistics counters in `ccache -s` output.
+
+
+Bug fixes
+~~~~~~~~~
+
+    - The `-MF`/`-MT`/`-MQ` options with concatenated argument are now handled
+      correctly when they are last on the commandline.
+    - ccache is now bug compatible with GCC for the `-MT`/`-MQ` options with
+      concatenated arguments.
+    - Fixed a minor memory leak.
+    - Systems that lack (and don't need to be linked with) libm are now
+      supported.
+
+
 ccache 3.1.4
 ------------
 Release date: 2011-01-09