Ordered data mode on reiserfs for 2.4.20-rc2-ac3

This is based on Chris Mason patches for 2.4.20. -ac tree differ because it lacks b_inode but using b_journal_head instead.

This patch may be wrong. So please peer review it. Thanks. But it booted and passed some tests here :)))

ftp://stingr.net/pub/l/reiser-ordered-2.4.20-rc2-ac3.gz

Paul P 'Stingray' Komkoff 'Greatest' Jr /// (icq)23200764 /// (http)stingr.net
  When you're invisible, the only one really watching you is you (my keychain)