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/client/hud_closecaption.cpp

@@ -2364,11 +2364,11 @@ bool CHudCloseCaption::AddAsyncWork( const char *tokenstream, bool bIsStream, fl
 		char tokenname[ 512 ];
 		tokenname[ 0 ] = 0;
 		const char *p = tokenstream;
-		p = nexttoken( tokenname, p, ' ' );
+		p = nexttoken( tokenname, p, ' ' , sizeof(tokenname) );
 		// p points to reset of sentence tokens, build up a unicode string from them...
 		while ( p && Q_strlen( tokenname ) > 0 )
 		{
-			p = nexttoken( tokenname, p, ' ' );
+			p = nexttoken( tokenname, p, ' ' , sizeof(tokenname) );
 
 			if ( Q_strlen( tokenname ) == 0 )
 				break;
@@ -2403,7 +2403,7 @@ void CHudCloseCaption::ProcessSentenceCaptionStream( const char *tokenstream )
 
 	const char *p = tokenstream;
 
-	p = nexttoken( tokenname, p, ' ' );
+	p = nexttoken( tokenname, p, ' ' , sizeof(tokenname) );
 
 	if ( Q_strlen( tokenname ) > 0 )
 	{