Make address rewriting info D_FULLDEBUG+D_NETWORK. #4494

Previously it was just D_FULLDEBUG, and the messages were
filling up logs with lots of clutter.  Now to see address
rewriting info, put D_NETWORK at level 2 or have both
D_NETWORK and D_FULLDEBUG.
Effectively revert commit 16eccc9fe [41615]. #4640

Reverted because it broke a regression test, and ran out of time
to fix before v8.3.2. So putting logic back to how it was for v8.3.2
and real fix will have to come in the next release.
Revert "Make address rewriting info D_FULLDEBUG+D_NETWORK. #4494"

This reverts commit 24cf55e60712952f52376381f2e4afb28ca7f5a9.
Move sinful rewrite logging to D_VERBOSE|D_NETWORK

It gets called a _lot_ and was kinda spamming D_VERBOSE.
Merge branch 'V8_3_2-branch'