added missing packages.c .h files
repositores and packages in arrays instead of llist
load package list to memory
corrct order of repositories
use busybox style linked lists
added apk_fetch test
test/apk_fetch/Makefile: initial import
make usage return instead of exit.
make the struct config *conf global to avoid passing it to close to every function.
src/fetch.c: added do_fetch() to make recursive fetches.