Remove most hard-coded offsets, have compute_offset function that takes a string and creates a TempNewSymbol, have static_field_addr() not add in InstanceMirrorKlass::offset_of_static_fields, ie use offset from find_field
Reviewed-by: kbarrett, sspitsyn
Add indirection for fetching mirror so that GC doesn't have to follow CLD::_klasses
Co-authored-by: Rickard Backman <rickard.backman@oracle.com>
Reviewed-by: hseigel, thartmann, eosterlund, stefank
