This is in preparation of the addition of "targets" in the sense
of "platforms to develop for" into the codebase.

Reviewed-by: dt

Implement IVersionControl::vcsAdd() using --intent-to-add with a cached
version check. On this occasion, implement vcsDelete() as well using
'git rm -f'.

Reviewed-by: dt

SetupData triggers all kind of updates, most notable restarting the
content, index widget and full text search indexer threads which might
hurt startup performance.

Reviewed-by: ck

Instigated-by: hjk

This is a confusing function and not needed anymore.

Reviewed-by: dt

"unreadable" memory

missing

Done with: Thorbjorn.

 * Looks like some version of creator does use lowercase
   keys:-/

Show the state in the combo boxes instead.

See BAUHAUS-328

foreach()-Loops.

QString: Use QChar where appropriate.

 * Add version number to .user-file.
 * Upgrade it from old versions.

Reviewed-by: dt

 * That is what everybody else is using now.

Reviewed-by: dt

 * This makes it easier to distinguish projects in the
   userfileaccessor

Reviewed-by: dt

Reviewed-by: dt

 * Make use of the ProjectConfiguration base class in the
   BuildConfigurations and update the factories accordingly.

Reviewed-by: dt

 * Use new BuildSteps interface (as seen in ProjectConfiguration).
 * Use new factory to construct/clone/restore them.

Reviewed-by: dt

Reviewed-by: dt

shared' libraries but not of 'static' dlls.