- Makefile (OBJS_qpkg): added pkg.o
- gobble.c (gobble_buf): moved "struct pkg" allocation to function new_pkg
in pkg.c
- qpkg.h: moved "struct pkg" and subordinate structures to pkg.h
- pkg.h, pkg.c (new_pkg, free_pkg): provide package structure definition,
allocation, and deallocation
- fixup.c, gobble.c, prereq.c, qpkg.c: include "pkg.h"
- gobble.c (finish_pkg): use free_pkg instead of just "free" to avoid
leaking memory
