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