Bump minimum numpy version to 1.7.1.

This matches the version required by SciPy 0.18.0, and provided
by RHEL 7.

Author: efiring

lib/matplotlib/__init__.py

@@ -135,7 +135,7 @@
 __version__ = str(get_versions()['version'])
 del get_versions
 
-__version__numpy__ = str('1.6')  # minimum required numpy version
+__version__numpy__ = str('1.7.1')  # minimum required numpy version
 
 __bibtex__ = """@Article{Hunter:2007,
   Author    = {Hunter, J. D.},

setupext.py

@@ -898,10 +898,10 @@ def add_flags(self, ext):
                                   'NPY_1_7_API_VERSION'))
 
     def get_setup_requires(self):
-        return ['numpy>=1.6']
+        return ['numpy>=1.7.1']
 
     def get_install_requires(self):
-        return ['numpy>=1.6']
+        return ['numpy>=1.7.1']
 
 
 class LibAgg(SetupPackage):