gmod_src: Added Entity:SetSaveValue( k, v ) - Like keyvalues..

Revision 654
Added Entity:SetSaveValue( k, v ) - Like keyvalues - but you can set ALL variables on an entity (if you know the variable name)
Added Entity:IsConstraint()
Added Entity:GetConstrainedPhysObjects()
Added Entity:GetConstrainedEntities()Changed Files:
[ul]
[li]trunk/src_garrysmod/game/shared/garrysmod/gmod_gamerules.cpp[/li][li]trunk/src_garrysmod/garrysmod/Objects/lua_entity.cpp[/li][li]trunk/src_garrysmod/garrysmod/Objects/lua_entity_sv.cpp[/li][/ul]
Committed By Garry Newman