Fix some resource leaks.

Changes in MiniDump.cpp and PPageWebServer.cpp by XhmikosR.
MpaDecFilter: updates channel mask for HDMV LPCM.
fix typo in 2c0032fcebfa8f4bf080a961539b49a9c62c7816
Use existing constant rather than _countof.

Use the usual style for constant while at it.
opensubtitles ISDb now accept "mpc-hc" as player variable
common.props: save it as UTF-8 without BOM
update coverity.bat
Update copyright year for the modified files.  Also fix starting copyright year for a lot of files.
move DISABLE_MINIDUMP to stdafx.h
Update Slovak translation
VSFilter: Change SubPicDesc::bits type from void* to byte*, fixes deletion of void*.
It was being used as a byte* everywhere.
DSUtil: Fix deletion of void*
Fix "Comparing an array to null is not useful".
I believe this is what was originally intended by these invalid checks.
Fix "Wrapper object use after free".
AudioSwitcher: Add an upper limit to channelsCount in Transform() to prevent a potential buffer overrun.
Fix "Uninitialized variable".