(CCCP Patch) Change the "beta" status text to "CCCP Build"

Personally I have no interest in such changes, but some users
herped a derp, so I oblige.
Subtitles: Remove the subtitle renderer sanity checks

They are imperfect and can cause valid "sane" subtitles to not
show. Also fix a new to be (std::nothrow) so that it can be just
checked for NULL.
VobSubImage: Fix parsing of alpha channel with vobsub subpictures

Fixes some previously invisible vobsubs to be shown.

Backport of MPC-BE commit 1459
Use program directory as current directory

And do that as soon as we can.
Fixes #3495
Replace commandline relative paths with absolute

Later we send the whole commandline through WM_COPYDATA,
and since current directories may differ, issues arise.

Fixes #3546
Internal LAVVideo: HW Acceleration wasn't correctly turned off on XP when none was detected.
Internal LAV Splitter: The advanced subtitle selection modes were ignored.

This commit fixes #3530.
Populate the capture bar only when opening Capture mode.

Buggy systems tend to crash when listing the available codecs for the capture bar. With this commit buggy systems will still be buggy but MPC-HC won't crash unless the user really starts capture mode.

This commit fixes #3523 #3533 #3551.
Fix: Ensure that the "On Top" status is checked when losing the focus.

It used to be checked on being given the focus which is mostly useless.

This commit helps for ticket #3541 but in theory it should just be a safety belt.