Git: Modernize

* pragma once
* member initialization
* s/struct/class/
* Introduce a static GitPlugin::client() method and use it

Change-Id: Ifdcac86dd16f3cdba11d564d03e9a15f00a6afdb
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/commitdata.cpp

@@ -28,7 +28,6 @@
 #include <utils/qtcassert.h>
 
 #include <QCoreApplication>
-#include <QDebug>
 
 namespace Git {
 namespace Internal {
@@ -39,12 +38,6 @@ void GitSubmitEditorPanelInfo::clear()
     branch.clear();
 }
 
-QDebug operator<<(QDebug d, const GitSubmitEditorPanelInfo &data)
-{
-    d.nospace() << "Rep: " << data.repository << " branch: " << data.branch;
-    return d;
-}
-
 void GitSubmitEditorPanelData::clear()
 {
     author.clear();
@@ -67,14 +60,6 @@ QString GitSubmitEditorPanelData::authorString() const
     return rc;
 }
 
-QDebug operator<<(QDebug d, const GitSubmitEditorPanelData &data)
-{
-    d.nospace() << " author:" << data.author << " email: " << data.email
-                << " bypass hooks: " << data.bypassHooks
-                << " action after commit " << data.pushAction;
-    return d;
-}
-
 CommitData::CommitData(CommitType type)
     : commitType(type)
     , commitEncoding(0)