- qpkg.h (struct pkg): added "arch" field for the architecture
- gobble.c (gobble_buf): record the architecture
- gobble.c (gobble_buf): fail if trying to set the file name twice
- qpkg.c (main): initialize trees before doing anything else, so that the
argument processing stays together
- qpkg.h (enum flags, struct pkg): replaced "installed" with "flags", one
of them being QPKG_INSTALLED
- gobble.c (compact_pkg, gobble_buf), prereq.c (push, resolve): adapted
for above change