Refactor skill selector to change automatically when switching character
class in Hexen mode. Add Strife skills list.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2557
* Update MSVC project file
* Add /msvc/strfsav* and *.pcx to ignore list
* Fix for Strife crushAndRaise, silentCrushAndRaise types identified by
  Gez and verified with the disassembly - these types do not inflict
  crushing damage in Strife.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2558
* Made formatting consistent in T_MovePlane so code could be read
* Fixed an error in the translation of T_MovePlane changes; floors
  moving up SHOULD test crush == true before calling P_ChangeSector
  again.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2559
Portability tweak when adding quest flags from collected items, due to
the Broken Power Coupling's anomalous speed value of 512*FRACUNIT
(verified against binary). Added note about this in the quest flags
enumeration as well; bit 31 (quest #32) is accidentally set by this
item, but is never checked for anywhere.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2560