Tests - merge basic.t with version.t and convert to python

* _version now outputs "2.4.2 (git-ref)" instead of only "git-ref" when building from git.
* Changelog updated accordingly.

src/commands/CmdVersion.cpp

@@ -135,7 +135,10 @@ CmdCompletionVersion::CmdCompletionVersion ()
 int CmdCompletionVersion::execute (std::string& output)
 {
 #ifdef HAVE_COMMIT
-  output = COMMIT;
+  output = std::string (VERSION)
+         + std::string (" (")
+         + std::string (COMMIT)
+         + std::string (")");
 #else
   output = VERSION;
 #endif