Add tooltips to the toggles found in the Git Blame and Diff editors.

Only enable submit button in the git submit editor when a non-empty
desciption of the patch is available. Git rejects empty commit messages
and old versions fail without even giving an error Qt Creator can detect,
so this should make commiting a bit more save.

Task-number: QTCREATORBUG-2410

Do not offer to commit in the dialog opened when closing the
commit editor when the commit is not containing all the required
information.

Task-number: QTCREATORBUG-3141

Allow to do codefolding on files and hunks in the diff editor

get away from argument stringlists. instead, use native shell command
lines which support quoting/splitting, environment variable expansion
and redirections with well-understood semantics.

Task-number: QTCREATORBUG-542
Task-number: QTCREATORBUG-1564

... instead of running a sed script over a lot of files on each
version increment.

Clean icore.h.

Fix detection of stash names.

Task-number: QTCREATORBUG-2934

Rename "Reset..." back to "Undo Uncommitted Changes..." to be more
in line with git gui as well as the file-based operations.

Reviewed-by: Leena Miettinen

Refer to "blame", not "annotate" since that is what we call the
action elsewhere.

Reviewed-by: Leena Miettinen

Reviewed-by: Tobias Hunger

String update as suggested by Leena.

When checking for a difference and being asked to handle untracked
files: Actually consider the presence of untracked files a change.

Fixes git commit editor not coming up when there were no changes,
only additions of new files.

Task-number: QTCREATORBUG-2610
Reviewed-by: Robert Loehning

Ignore spacing changes in diff (based on same setting as used to
ignore spacing in git blame).

Task-number: QTCREATORBUG-2526

Do not fail when cloning non-defautl branches from local repositories:
Branches do already exist in this case, so do not try to set them up
again.

Handle detached HEADs as well as cloning from repositories that default
to another branch but master. This is relevant when clonig local
repositories.

Reviewed-by: Friedemann Kleint

Change the mapping of repository name to checkout directory name.
This should now work better with windows.

 * Polish the base checkout wizard
    * Make UI easier to grasp
    * Add tooltips explaining things

Task-number: QTCREATORBUG-2540
Reviewed-by: Robert Loehning

Check author information to be valid before enableing
the commit button.

Task-number: QTCREATORBUG-2410

Should have been done earlier. 2.1.80 was burned in the pre-2.1.0->2.0.1
days, and we'd like to have odd subminor for 'working' and even subminor
numbers for pure cherry-picking release branches anyway.

Merge-request: 2178
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

Added few new functions to IVersionControl, VCSManager and GeneratedFile to support the funcationality needed by the trac plugin.
All the version control plugins updated to have implementations according to the interface changes.

Merge-request: 2178
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

Merge-request: 2178
Reviewed-by: Tobias Hunger <tobias.hunger@nokia.com>

Fix regression where creator was no longer able to run git if the
PATH was not explicitly set in the configuration.

Task-number: QTCREATORBUG-2478
Reviewed-by: Robert Loehning

Fix commiting with Author and Email set on Windows.

Task-number: QTCREATOR-2397

Reviewed-by: dt