Update modreg.c

Making important changing and cleaning up
Update modreg.h
Updated modreg.c, fixed a few more mistakes
Changed to strtoul() and fixed includes
Create stdlib.c
Update stdlib.h
Created tree.h off of old index_tree.h
Rename tree.h to tree.c
Create tree.h
Did a ton of work on modreg
Hopefully fixed Noah's errors in using fs functions
Missed one error Noah made
Added kldr/build/modules
Successful building
Merged back with 'master'
Merge branch 'modreg'
Merge branch 'master' of https://github.com/darksideos/darkside-kernel