Merged dev changes 10/24/2019

- Applied the nexttoken security fix (suggested by ficool2, important for MP port, no #ifdef MAPBASE because of volume of changes and irrelevance to readers)
- Fixed a crash with the follower wait point start/stop using handlers
- Fixed game_ui activator crash
- Changed vphysics triggers to accept more entities
- Fixed player squadmates not obeying hint node facing (e.g. wait points)
- Fixed npc_snipers
- prop_vehicle_jeep_old no longer changes classname
- Restored and added the other CTakeDamageInfo fields for point_damageinfo
- Fixed game_metadata not saving correctly
- Fixed logic_measure_movement not functioning while possessing spawnflags
- Added scripts/mapbase_rpc.txt script with choosable app ID and game image
- Fixed some casing that broke Linux support
- Added proper WorldVertexTransition blending to translucency and selfillum (translucency may need the translucent texture to be $basetexture, not $basetexture2)
- Added modified parallax corrected cubemaps to shader code (although currently unusable)
- Fixed Variant_ParseInput
- Added/restored custom scanner speed (experimental, needs more work)
- Several miscellaneous code changes/fixes and comment adjustments

sp/src/game/server/mapentities.cpp

@@ -86,7 +86,7 @@ string_t ExtractParentName(string_t parentName)
 		return parentName;
 
 	char szToken[256];
-	nexttoken(szToken, STRING(parentName), ',');
+	nexttoken(szToken, STRING(parentName), ',', sizeof(szToken));
 	return AllocPooledString(szToken);
 }
 
@@ -208,7 +208,7 @@ void SetupParentsForSpawnList( int nEntities, HierarchicalSpawn_t *pSpawnList )
 			if ( strchr(STRING(pEntity->m_iParent), ',') )
 			{
 				char szToken[256];
-				const char *pAttachmentName = nexttoken(szToken, STRING(pEntity->m_iParent), ',');
+				const char *pAttachmentName = nexttoken(szToken, STRING(pEntity->m_iParent), ',', sizeof(szToken));
 				pEntity->m_iParent = AllocPooledString(szToken);
 				CBaseEntity *pParent = gEntList.FindEntityByName( NULL, pEntity->m_iParent );