Move static variables to context filling in by this fcuntion and owned by a callee function. This ensures no conflicts between threads happens because of static variables used in this function. Also moved modifier types and virtual modifiers data to a function called from creator. This is needed to be sure all the information is properly initialied to the time when threads starts to use this data. -- svn merge -r57899:57900 ^/branches/soc-2013-depsgraph_mt