Backported lttng 2.2.0 from master branch

Author: Otavio Salvador <otavio@ossystems.com.br>
    babeltrace: Update to 1.1.1 based release
    lttng-ust: Update to 2.2.0 based release
    lttng-modules: Update to 2.2.0 based release
    lttng-tools: Update to 2.2.0 based release

Signed-off-by: Mikhail Durnev <mikhail_durnev@mentor.com>
Merge pull request #25 from mdurnev/mdurnev/lttng220

Backported lttng 2.2.0 from master branch
Replace do_rootfs[dirs] = with +=

This is required to add new dir from in other layer.

Signed-off-by: Sergey Ignatov <sergey_ignatov@mentor.com>
libmusicbrainz: Explicitly link with libpthread.a

Workaround the issue discussed here:
   http://sourceware.org/bugzilla/show_bug.cgi?id=15126

Signed-off-by: Drew Moseley <drew_moseley@mentor.com>
Merge pull request #27 from drewmoseley/new-toolchain

libmusicbrainz: Explicitly link with libpthread.a
Merge pull request #26 from sergeiignatov/debug-file-directory

merge hotfix-008