nuke all the #if 0's

scripted commit:

find . -not -path '*/.*' -and -not -path '*/ext*' -type d -exec coan source -R -E {} ';'

https://coan2.sourceforge.net/coan_man_1.html

TileEngine/Explosion Control.cpp

@@ -821,11 +821,7 @@ INT8 ExplosiveDamageStructureAtGridNo( STRUCTURE * pCurrent, STRUCTURE **ppNextC
 					{
 						if ( !(ppTile[ ubLoop ]->fFlags & TILE_ON_ROOF ) )
 						{
-#if 0//dnl ch83 080114
-							sStructGridNo = pBase->sGridNo + ppTile[ubLoop]->sPosRelToBase;
-#else
 							sStructGridNo = AddPosRelToBase(pBase->sGridNo, ppTile[ubLoop]);
-#endif
 							// there might be two structures in this tile, one on each level, but we just want to
 							// delete one on each pass
 
@@ -1456,11 +1452,7 @@ void ExplosiveDamageGridNo( INT32 sGridNo, INT16 sWoundAmt, UINT32 uiDist, BOOLE
 
 					for ( ubLoop = BASE_TILE; ubLoop < ubNumberOfTiles; ubLoop++)
 					{
-#if 0//dnl ch83 080114
-						sNewGridNo = sBaseGridNo + ppTile[ubLoop]->sPosRelToBase;
-#else
 						sNewGridNo = AddPosRelToBase(sBaseGridNo, ppTile[ubLoop]);
-#endif
 						// look in adjacent tiles
 						for ( ubLoop2 = 0; ubLoop2 < NUM_WORLD_DIRECTIONS; ubLoop2++ )
 						{