Git: Don't pop VCS pane on stage

The command is appended anyway, and it usually produces no output
to stdout

Change-Id: Ie5f685b090ead8a0e888c9c0cfa6db2411e91f33
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>
fix auto-generated version info in .pluginspec files

we need to include qtcreator.pri before calculating $$dependencyList, as
that's where the version comes from.

this also has the side effect that the "real" dependency resolution in
qtcreator.pri gets "clean" input - not that it would actually matter.

Change-Id: Ibb91c569c8e05b0e45214e7e84aee8ff3316bf5d
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
make stubs for dangerous/useless qmake functions in limited mode

instead of having them "not implemented" (and consequently getting
errors), just let requires(), system(), mkpath(), write_file(), touch()
and cache() do nothing. this is likely to cause followup failures which
are harder to detect, but the amount of scary noise we are producing now
is not really acceptable. furthermore, in qtcreator these failures
actually terminate the "precise" evaluation, which breaks Run
Configurations.

Task-number: QTBUG-28159 (in different repo)
Task-number: QTCREATORBUG-8550
Change-Id: I1bdeb759e895e4200f09332dadf8a6cef348182f
Reviewed-by: Daniel Teske <daniel.teske@digia.com>
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
(cherry picked from qttools/94ab2efb2d155d3c1ca7b91c1daf443a149bcf1f)
Reviewed-by: Eike Ziller <eike.ziller@digia.com>