Move reference pending list and locking into VM
Co-authored-by: Per Liden <per.liden@oracle.com>
Reviewed-by: coleenp, dholmes, dcubed, mchung, plevart
Push up the common run() and stop() methods from subclasses to ConcurrentGCThread, as well as declaration iof run_service() stop_service().
Reviewed-by: kbarrett, pliden
Used compiled-based TLS when available. Additional contributions by Thomas Stufe (AIX) and Andrew Haley (Aarch64)
Reviewed-by: stuefe, bdelsart, dcubed