Details: Execute git status from repo directory

Task: 205821
RevBy: con
Details:  Add a IVersionControl to git. Extend IF to able to return a name and add enabling options. Connect project explorer to enable the right VCS.

This is in anticipation of a change in the next gdb release
which will drop the token.

Details:  Found while reading the code. It was only used in that
function anyway, and this simplfies the code a little bit and
removes some dubious left over.

Task: 205821
RevBy: Eike
Details: Add a IVersionControl to git. Extend IF to able to return a name and add enabling options. Connect project explorer to enable the right VCS.

With many git commands it is safer to disambiguate files from refs by
putting '--' in front of the list of files.

Also corrected a margin in the git submit panel.

Task:     Reported by eskil on irc.

Task:     -
RevBy:    -
AutoTest: -
Details:  -

Details:  - Bad formatted command confused gdb completely

Help the compiler pick the correct overload for the call to pow().

Should have been part of 83e3524b

Details:  ProFileCache be gone, as is ManagedProFile, not to be missed.
Drastically simplified how ownership works.

Task:     -
RevBy:    -
AutoTest: -
Details:  -

Task:     -
RevBy:    -
AutoTest: -
Details:  -

Task:     -
RevBy:    -
AutoTest: -
Details:  -

Details:  Another dummy, still more to do.

Details:  Noticed while working on cmake.

Task:     Reported on irc.

Details:  Makes the code look better.

RevBy:    - mae