Fix backwards logic for -novert handling.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 2640
When loading Heretic savegames, NULL out certain special values which
hold pointers to other mobj_t objects that will no longer be valid.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2718
Select fallback IWADs that match the game we are configuring (thanks
Alexandre Xavier).

Subversion-branch: /branches/v2-branch
Subversion-revision: 2719
Don't crash Heretic in A_SkullPop() if a player is gibbed and respawns
before the head separates from the body (thanks Tumlee).

Subversion-branch: /branches/v2-branch
Subversion-revision: 2720
Default to windowed mode in OS X, as there is an SDL bug that can cause
crashing in fullscreen mode (thanks Ryan Peel).

Subversion-branch: /branches/v2-branch
Subversion-revision: 2721
Use _SCRIPTS rather than _DATA for duplicated setup binaries so that the
right mode is set on 'make install' (thanks zakupork).

Subversion-branch: /branches/v2-branch
Subversion-revision: 2722
Fix Vanilla behavior of shift key when entering savegame names in the
menu (thanks Alexandre Xavier).

Subversion-branch: /branches/v2-branch
Subversion-revision: 2723
Determine which textscreen font to use by looking at the current desktop
screen resolution, not the largest fullscreen resolution offered by SDL.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 2724
Merge from trunk.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2725
Use .items() rather than .iteritems() for compatibility with Python 2.7
and Python 3.0 (thanks chungy).

Subversion-branch: /branches/v2-branch
Subversion-revision: 2726
Declare Windows binaries as DPI-aware to prevent the OS from applying
DPI virtualization.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2727
Add missing asmv3 namespace to setup manifest (oops).

Subversion-branch: /branches/v2-branch
Subversion-revision: 2728
Use system DPI setting on Windows to determine whether to use the large
font.

Subversion-branch: /trunk/chocolate-doom
Subversion-revision: 2730
Merge from trunk.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2731
Bump version number to 2.0.0-beta2.

Subversion-branch: /branches/v2-branch
Subversion-revision: 2732