update to 3.1.7

OBS-URL: https://build.opensuse.org/package/show/devel:tools:building/ccache?expand=0&rev=20

ccache.changes

@@ -1,3 +1,27 @@
+-------------------------------------------------------------------
+Mon Jan  9 07:30:04 UTC 2012 - puzel@suse.com
+
+- update to ccache-3.1.7 
+  - Non-writable `CCACHE_DIR` is now handled gracefully when
+    `CCACHE_READONLY` is set.
+  - Made failure to create files (typically due to bad directory
+    permissions) in the cache directory fatal. Previously, such
+    failures were silently and erroneously flagged as "compiler
+    produced stdout".
+  - Both the `-specs=file` and `--specs=file` forms are now
+    recognized.
+  - Added recognition and hashing of GCC plugins specified with
+    `-fplugin=file`.
+  - `CCACHE_COMPILERCHECK` now also determines how to hash explicit
+    specs files (`-specs=file`).
+  - Added `CPATH`, `C_INCLUDE_PATH` and similar environment
+    variables to the hash to avoid false cache hits when such
+    variables have changed.
+  - Corrected log message when unify mode is enabled.
+  - Reverted the GCC bug compatibility introduced in ccache 3.1.5
+    for `-MT`/`-MQ` options with concatenated arguments. (The bug
+    is fixed in recent GCC versions.)
+
 -------------------------------------------------------------------
 Sat Sep 17 22:39:57 UTC 2011 - jengelh@medozas.de