[arch-releng] [RFC] Finalized work about install_dir

[Gerardo Exequiel Pozzi]

All this work is in my install_dir branch (based on experimental). Tested and works.

http://github.com/djgera/archiso/compare/experimental...install_dir

Today images sizes:
(*dual build with -T split, otherwise core-dual is 725M and net-dual 355M):

666M archlinux-2010.10.21-core-dual.iso
357M archlinux-2010.10.21-core-i686.iso
374M archlinux-2010.10.21-core-x86_64.iso
297M archlinux-2010.10.21-netinstall-dual.iso
176M archlinux-2010.10.21-netinstall-i686.iso
185M archlinux-2010.10.21-netinstall-x86_64.iso