packaging: move most packaging targets to own Makefile
Since we're putting everything packaging under one roof, let's
define the make targets related to packaging there as well.
I didn't move the "osx" target because it is non-trivial.
Some targets did change slightly as part of the move. But it
was mostly around path normalization.
Differential Revision: https://phab.mercurial-scm.org/D3552
#require serve
$ hg clone http://localhost:$HGPORT/ copy
abort: * (glob)
[255]
$ test -d copy
[1]
$ $PYTHON "$TESTDIR/dumbhttp.py" -p $HGPORT --pid dumb.pid
$ cat dumb.pid >> $DAEMON_PIDS
$ hg clone http://localhost:$HGPORT/foo copy2
abort: HTTP Error 404: * (glob)
[255]
$ killdaemons.py