Log Message:
ccache: updated to 3.7.7

ccache 3.7.7
Bug fixes

* Fixed a bug related to object file location in the dependency file (if using \ 
-MD or -MMD but not -MF and the build directory is not the same as the source \ 
directory then the object file location in the .d file would become incorrect). \ 
This fixes regression in ccache 3.7.5 introduced by the bug fix related to \ 
EDG-based compilers. Note that this removes support for EDG-based compilers \ 
again. (A better fix for this is planned for ccache 4.0.)

* Removed the unify mode since it has bugs and shortcomings that are non-trivial \ 
or impossible to fix: it doesn’t work with the direct mode, it doesn’t \ 
handle C++ raw strings correctly, it can give false cache hits for .incbin \ 
directives, it’s turned off when using -g and it can make line numbers in \ 
warning messages and __LINE__ macros incorrect.

* mtime and ctime values are now stored in the manifest files only when \ 
sloppy_file_stat is set. This avoids adding superfluous manifest file entries on \ 
direct mode cache misses.

* A “Result:” line is now always printed to the log.

* The “cache miss” statistics counter will now be updated for read-only \ 
cache misses, making it consistent with the cache hit case.