Remove comment lines from the git commit message (as git commit -F does not do that)

Reviewed-by:  dt <qtc-committer@nokia.com>
 enter the commit message for your changes. Lines starting

src/plugins/git/gitsubmiteditor.cpp

@@ -35,6 +35,7 @@
 #include <vcsbase/submitfilemodel.h>
 
 #include <QtCore/QDebug>
+#include <QtCore/QStringList>
 
 namespace Git {
 namespace Internal {
@@ -121,6 +122,25 @@ void GitSubmitEditor::slotDiffSelected(const QStringList &files)
         emit diff(unstagedFiles, stagedFiles);
 }
 
+QString GitSubmitEditor::fileContents() const
+{
+    // We need to manually purge out comment lines starting with
+    // hash '#' since git does not do that when using -F.
+    const QChar newLine = QLatin1Char('\n');
+    const QChar hash = QLatin1Char('#');
+    QString message = VCSBase::VCSBaseSubmitEditor::fileContents();
+    for (int pos = 0; pos < message.size(); ) {
+        const int newLinePos = message.indexOf(newLine, pos);
+        const int startOfNextLine = newLinePos == -1 ? message.size() : newLinePos + 1;
+        if (message.at(pos) == hash) {
+            message.remove(pos, startOfNextLine - pos);
+        } else {
+            pos = startOfNextLine;
+        }
+    }
+    return message;
+}
+
 GitSubmitEditorPanelData GitSubmitEditor::panelData() const
 {
     return const_cast<GitSubmitEditor*>(this)->submitEditorWidget()->panelData();