Fixes: Using a git configuration with colored output breaks much of the git plugin.

Task:     248067
Details:  Use --no-color where appropriate. Use a hack to remove color sequences from output for "status" since it does not support the option as of git 1.6.2.

src/plugins/git/gitclient.h

@@ -135,6 +135,8 @@ public:
 
     static QString msgNoChangedFiles();
 
+    static const char *noColorOption;
+
 public slots:
     void show(const QString &source, const QString &id);