Cosa è cambiato in EDuke32, build per build

This fixes the bug reported here: http://forums.duke4.net/topic/5340-bug-with-masked-walls/page__view__findpost__p__123233 But I haven't checked the change for any adverse effects.

This fixes RESPAWN preview wrongly clamping the previewed tsprite z coords to [-524288 .. 524288] (x/y limits). Also, make the previewed tsprites be 33% translucent with the option of 66% translucency by setting 'showrespawn_fulltrans' to 1 in a.m32.

- colorize the trailing part if there is corruption or (new) if sprites were removed - also corrupt-check when loading <V7 map - move start{pos,ang,sectnum} to build.c - remove pointless ...[].extra = -1 before loading map, scantoasc*[] comment

Sprites are now considered to have out of bounds sector numbers if it is < 0 or >= numsectors (not merely >= MAXSECTORS). If such a sprite is now encountered during post-load, an attempt is made first to assign it a sector number (using updatesector()). If that fails, the sprite is removed from the map. The background is that a dozen of maps do come with such sprites and could previously corrupt the sprite list when loaded.

Also, in two cases, don't assign A_IncurDamage() result to a variable if it's not needed.

- In S_PlaySound(), move the sound index bound check above an indexing. - For A_CheckHitSprite(), and A_FindPlayer(), allow NULL second arg. - In A_ShootWithZvel(), make some one-letter vars be int32_t, making storing safeldist() results in them meaningful. - In MaybeTrainKillEnemies(), remove two redundant checks and move another one further up. - Comment that SIDEBOLT1 will never be translucent as was probably intended. - In G_MoveFX(), fix an always-true comparison.

- Rewrite some sprites-of-{stat,sector} loops using the SPRITES_OF, SPRITES_OF_SECT and new SPRITES_OF_SECT_SAFE macros. - In passing, identify some problems and mark them with 'XXX', but don't attempt to fix them yet. - The usual readability improvements...

[1] http://forums.duke4.net/topic/2961-paper-cuts-minor-bugs-and-annoyances/page__view__findpost__p__153060

(Note: We are still vulnerable to crashes here (and likely in other places), but you have (4096-16) extra characters to work with. We should consider replacing many uses of Bsprintf with Bsnprintf.)

This fixes liztroops not passing TROR layers when on the jetpack, as well as other enemies capable of moving upward, and also COMMANDER and DRONE (for which the code is special-cased).

Also, implement 'cmenu' in LunaCON, make 'definequote' also allowed as inner command.

Also, - retire IFWITHIN() macro, preferring expanding it - fix _endofgame() in control.lua

This is done by always calling FX_PlayAuto3D() to play such sounds. It now additionally takes a third argument 'loophow', permissible values being FX_ONESHOT and FX_LOOP.