updated some requirements to newest versions

setup.py

@@ -6,11 +6,11 b' from rhodecode import get_version'
 requirements = [
         "Pylons==1.0.0",
         "WebHelpers>=1.2",
-        "SQLAlchemy>=0.6.5",
+        "SQLAlchemy>=0.6.6",
         "Mako==0.3.6",
         "vcs>=0.1.10",
-        "pygments>=1.3.1",
-        "mercurial>=1.7.2",
+        "pygments>=1.4",
+        "mercurial>=1.7.3",
         "whoosh>=1.3.4",
         "celery>=2.1.4",
         "py-bcrypt",