Cmake: Added cmake errors parser

Added cmake errors parser

Change-Id: I137f62111861c7e72d84e44b5ab631b9f60c2834
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
Mercurial: Run update after pull

Get output of pull command and emit signal if update/merge is needed. On
update show update dialog.

Change-Id: I814f76daf3d89d0bd9485ed42a224b6b5d78bcb3
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>