merge trunk back into this.
Also commit one extra line to configure.ac +AC_SUBST(PYCOVERAGE_RUN) (not sure how that disappeared but my last changes would have never worked) git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac362@3625 e5f2f494-b856-4b98-b285-d166d9295462