setup WIP
disable a couple more /analyze warnings for VS2012
Soundtouch: use SSE optimizations for x86.
Const correctness. Also pass the argument by reference when possible.
cosmetics: use C comment
Completely remove RatDVD.

RatDVD was removed from the icon library and file associations in 2307da279e74b216681ef489f38b7e1bd22a04c2.
Remove unused variables.
Replace memset with ZeroMemory.

The ZeroMemory macro makes clear what it does compared to `memset(foo, 0, bar)`.
Get rid of duplicate defines.
Fix the C4701 warnings: Potentially uninitialized local variable "XXX" used.
Use the M_PI define instead of the Pi number.

Also remove the M_PI fallback define; we always build with `_USE_MATH_DEFINES` defined.

This commit partially reverts dad01b003dc8c5934d8e08fa5dfef9b5536034ef.
Use REFERENCE_TIME in a few more places instead of LONGLONG.
TextPassThruFilter: move the classes to the header file.
Make a couple of functions constant.
Rename var for consistency.
MainFrm.cpp: simplify check