Added support for target buffer in as_utf8_string(), minor refactoring of as_utf8 and added some internal VM testing
Reviewed-by: coleenp, dsimms, sla, dholmes
When java process crashed in compiler thread, repeat the compilation process will help finding root cause. This is done with using SA dump application class data and replay data from core dump, then use debug version of jvm to recompile the problematic java method.
Reviewed-by: kvn, twisti, sspitsyn