Summary: Initialize host_klass while parsing the class with the other initializations.
Reviewed-by: sspitsyn, stefank

Summary: Build system tweaks to allow building with Xcode 5 and on OS X 10.9 and later
Reviewed-by: erikj, henryjen, dholmes

Summary: Checkpoint do_space_filter.ksh cleanups for Contended Locking.
Reviewed-by: sspitsyn, coleenp

Summary: Better parsing of /proc/pid/maps in sa
Reviewed-by: sspitsyn, sla