merge b_devel into b_llpio:

merge b_devel into b_llpio:

 - bug 1639: write/truncate lock inversion
 - bug 1763: fix timestamps from jumping to "now"
 - bug 1648: extra journal assertions
 - bug 1771: add an extra multiunlink test
 - bug 1776: fix read_record/write_record API
 - bug 1772: fix leak of offset_extent, possible incorrect i_size later
 - bug 1541: fix lasserts in mis-matched transnos during open-unlink testing
 - don't mark a file as an orphan unless this is the last link
 - avoid committing NULL handle in force close
 - local.sh is now a one-stripe LOV configuration