New version with all ifdef CONFIG_MMU gone from procfs.

Instead, the conditional code is in either task_mmu.c/task_nommu.c, and
the Makefile will select the proper file for inclusion depending on
CONFIG_MMU.

Makefiles no longer need to include Rules.make, which is currently an
empty file.  This patch removes it from the remaining Makefiles, and
removes the empty Rules.make file.

  - David Miller: network syncup (better TCP page fault handling by Andrea etc)
  - Tim Hockin: moxa driver fixes
  - Alexander Viro: clean up process reaping procedures, make /proc use
  the proper fields to notice that the process is gone, gone, gone.
  - Justin Gibbs: aic7xxx driver update to 6.1.13.
  - me: fix PCI allocation so that it doesn't stomp on unknown memory
  - Jeff Garzik: 8139too net drvr fix
  - Nigel Gamble: merge page fault interrupt gate from preemtible kernel.
  Fixes problem noticed by Brian Gerst.
  - Jean Tourrilhes: Orinoco / Airport support diff. Mucho cleanups.