[make] argument indent, clean cleanup

properly indent arguments
merge archclean into prog-clean, no duplicates
[build] Change darwin build flags to enable gdb debugging

compile parrot_old static. use this for debugging with gdb.
keep -undefined dynamic_lookup only for dynamically loaded bundles.
honor cmdline flags for --ld and --link.

and move deletion of generated config and makefiles from archclean
to realclean/distclean. we want to delete all object and executables
only there.

See [GH #1096]