MpaDecFilter: added convert_int24_to_int32 function.
MpaDecFilter: fixed typo
Open dialog: Fix the error message shown when clicking "Browse" while having an URL entered in the corresponding field.
MiniDump: Make a test more explicit.
MiniDump: Ensure that the folder used to store the dump exists.
VSFilter: move the version to a separate file.
AboutDlg.cpp: use the MPC_VERSION_ARCH define
setup WIP
Simplify preprocessor config.
Soundtouch: use SSE optimizations for x86.
Initialize variables. (WIP)
Remove using std.
DSUtil/MediaTypes.h: Be consistent with pragma pack directive.
cosmetics: add new lines at the end of files.
Don't use camelcase words in About dialog anymore.
contrib/checkyear.sh: include pl files in the check.
Bump copyright year for modified files.

Everyone with push rights has to use the precommit hook.

(Hint: `cp contrib/checkyear.sh .git/hooks/pre-commit`)