a long long time ago, there was no such thing as "from socket" and the
socket listener was tagged "local" so we could trick "from local" into
matching non-network connections.
this hack was removed years ago and the socket listener still had this
"local" tag hardcoded. this commit teaches parse.y how to assign a tag
to a socket listener and removes the hardcoded "local".
- remove PKG_ARCH=* packages from DEBUG_PACKAGES, to help with
- ditch DEBUG_FILES entirely, the automated mechanism appears to be
- tweak show-debug-info to show the file names