Change list flags back to 8 bits instead of just 2

improve the list abstraction with "struct list_head" and "struct list"

both structs are actually just uint32_t's in disguise, using bitfields
to avoid the need for explicit bit operations, and using two type names
to hide the RAZOR_IMMEDIATE hack from the public API

Add a list abstraction for package/property lists

split array and hashtable code out into a new file

clean up some duplicated code around calls to add_to_property_pool

pad repo files with 0 bytes, not random memory

so you can do:
./razor import-yum
mv rawhide.repo rawhide.repo.orig
make
./razor import-yum
diff rawhide.repo.orig rawhide.repo

(doesn't work with system.repo at the moment...)

fix dependencies

s/import/yum/

update

Support for less/equal/greater version in requires/conflicts, etc

Add less/equal/greater information to razor_property, and update
importers and other code.

Move the rpm importer from import.c to rpm.c to avoid code
duplication, and then rename import.c to yum.c since that's all that's
left.