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/cdll_util.cpp

@@ -747,11 +747,14 @@ CBaseEntity *CEntitySphereQuery::GetCurrentEntity()
 //			sep - Character to use as separator. UNDONE: allow multiple separator chars
 // Output : Returns a pointer to the next token to be parsed.
 //-----------------------------------------------------------------------------
-const char *nexttoken(char *token, const char *str, char sep)
+const char *nexttoken(char *token, const char *str, char sep, size_t tokenLen)
 {
 	if ((str == NULL) || (*str == '\0'))
 	{
-		*token = '\0';
+		if(tokenLen)
+		{
+			*token = '\0';
+		}
 		return(NULL);
 	}
 
@@ -759,11 +762,25 @@ const char *nexttoken(char *token, const char *str, char sep)
 	// Copy everything up to the first separator into the return buffer.
 	// Do not include separators in the return buffer.
 	//
-	while ((*str != sep) && (*str != '\0'))
+	while ((*str != sep) && (*str != '\0') && (tokenLen > 1))
 	{
 		*token++ = *str++;
+		tokenLen--;
+	}
+
+	//
+	// If token is to big for return buffer, skip rest of token.
+	//
+	while ((*str != sep) && (*str != '\0'))
+	{
+		str++;
+	}
+
+	if(tokenLen)
+	{
+		*token = '\0';
+		tokenLen--;
 	}
-	*token = '\0';
 
 	//
 	// Advance the pointer unless we hit the end of the input string.