[sr-dev] include entering/leaving blocks in debug level 7

[Juha Heinanen]

would it be possible to enhance debug level 7 so that it would print
entering/leaving of route/failure/... blocks?

i'm in the middle  of debugging a mystery where syslog shows

DBG:core:rewrite_uri: rewriting Request-URI with 'sip:foo.bar at ip-addr:5060;transport=UDP'

but i cannot find in config file where that happens and debug doesn't
tell what command caused the rewrite.

-- juha