Cosmetic change for Changeset 
|Reported by:||mmadia||Owned by:||bonefish|
|Has a Patch:||no||Platform:||All|
Rename build/jam/UserBuildConfig to SharedUserBuildConfig (or GlobalUserBuildConfig).
Rename HAIKU_OUTPUT_DIR/UserBuildConfig to LocalUserBuildConfig
This is merely to indicate that one file applies to all generated folders and the latter does not.
These need to be renamed to SharedUserBuildConfig