dev-python/matplotlib: Version bump to 1.5.3

Gentoo-bug: 590396
* EAPI=6

Package-Manager: portage-2.3.0

dev-python/matplotlib/files/matplotlib-1.5.3-freetype-spurious-failure.patch

@@ -0,0 +1,26 @@
+Increase the tolerance margin in order to pass tests caused by
+freetype producing unreproducible images across different versions.
+See also: https://github.com/matplotlib/matplotlib/issues/2667
+
+--- a/lib/matplotlib/tests/test_mathtext.py
++++ b/lib/matplotlib/tests/test_mathtext.py
+@@ -158,7 +158,7 @@
+ def make_set(basename, fontset, tests, extensions=None):
+     def make_test(filename, test):
+         @image_comparison(baseline_images=[filename], extensions=extensions,
+-                          tol=32)
++                          tol=40)
+         def single_test():
+             matplotlib.rcParams['mathtext.fontset'] = fontset
+             fig = plt.figure(figsize=(5.25, 0.75))
+--- a/lib/matplotlib/tests/test_text.py
++++ b/lib/matplotlib/tests/test_text.py
+@@ -18,7 +18,7 @@
+ from matplotlib.backends.backend_agg import RendererAgg
+ 
+ 
+-@image_comparison(baseline_images=['font_styles'])
++@image_comparison(baseline_images=['font_styles'], tol=20)
+ def test_font_styles():
+     from matplotlib import _get_data_path
+     data_path = _get_data_path()