Update to sagemath 7.3

sagemath-qepcad.patch

@@ -1,27 +1,35 @@
 diff -up src/sage/interfaces/qepcad.py.orig src/sage/interfaces/qepcad.py
---- src/sage/interfaces/qepcad.py.orig	2015-07-19 15:07:33.423329719 -0300
-+++ src/sage/interfaces/qepcad.py	2015-07-19 15:07:50.294330365 -0300
-@@ -522,8 +522,8 @@ TESTS:
+--- src/sage/interfaces/qepcad.py.orig	2016-08-08 13:58:03.953585989 -0400
++++ src/sage/interfaces/qepcad.py	2016-08-08 14:00:58.323592666 -0400
+@@ -530,8 +530,8 @@ TESTS:
  
  Check the qepcad configuration file::
  
 -    sage: open('%s/default.qepcadrc'%SAGE_LOCAL).readlines()[-1]
--    'SINGULAR .../local/bin\n'
+-    'SINGULAR .../bin\n'
 +    sage: open('/usr/share/qepcad/default.qepcadrc').readlines()[-1]
 +    'SINGULAR /usr/bin\n'
  
- AUTHORS:
+ Tests related to the not tested examples (nondeterministic order of atoms)::
  
-@@ -550,6 +550,8 @@ from sage.repl.preparse import implicit_
+@@ -606,7 +606,6 @@ AUTHORS:
+ from __future__ import print_function
+ from __future__ import absolute_import
  
- from expect import Expect, ExpectFunction, AsciiArtString
+-from sage.env import SAGE_LOCAL
+ import pexpect
+ import re
+ import sys
+@@ -618,6 +617,8 @@ from sage.interfaces.tab_completion impo
+ 
+ from .expect import Expect, ExpectFunction, AsciiArtString
  
 +QEPCAD_LOCAL = "/usr/share/qepcad"
 +
- def _qepcad_cmd(memcells=None):
+ def _qepcad_atoms(formula):
      r"""
-     Construct a QEPCAD command line.
-@@ -560,17 +562,17 @@ def _qepcad_cmd(memcells=None):
+     Return the atoms of a qepcad quantifier-free formula, as a set of strings.
+@@ -647,17 +648,17 @@ def _qepcad_cmd(memcells=None):
  
          sage: from sage.interfaces.qepcad import _qepcad_cmd
          sage: s = _qepcad_cmd()
@@ -42,7 +50,7 @@ diff -up src/sage/interfaces/qepcad.py.orig src/sage/interfaces/qepcad.py
  
  _command_info_cache = None
  
-@@ -595,7 +597,7 @@ def _update_command_info():
+@@ -682,7 +683,7 @@ def _update_command_info():
  
      cache = {}