Support Python 3.7 (#1579761)

Add upstream commit to fix one test, remove the file of skipped test.

psycopg2-test-cursor-async.patch

@@ -0,0 +1,24 @@
+From ef64493b8913e4069c4422ad14da6de405c445f6 Mon Sep 17 00:00:00 2001
+From: Jon Dufresne <jon.dufresne@gmail.com>
+Date: Sun, 3 Dec 2017 18:47:19 -0800
+Subject: [PATCH] Fix use of "async" in test_cursor.py
+
+"async" will be a keyword starting with Python 3.7. On Python 3.6, use
+of "async" causes a deprecation warning. Use the alias "async_" instead.
+---
+ tests/test_cursor.py | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/tests/test_cursor.py b/tests/test_cursor.py
+index e896ef94..5c94f422 100755
+--- a/tests/test_cursor.py
++++ b/tests/test_cursor.py
+@@ -553,7 +553,7 @@ def test_external_close_async(self):
+         # Issue #443 is in the async code too. Since the fix is duplicated,
+         # so is the test.
+         control_conn = self.conn
+-        connect_func = lambda: self.connect(async=True)
++        connect_func = lambda: self.connect(async_=True)
+         wait_func = psycopg2.extras.wait_select
+         self._test_external_close(control_conn, connect_func, wait_func)
+ 

python-psycopg2.spec

@@ -39,6 +39,9 @@ Url:		http://www.psycopg.org/psycopg/
 
 Source0:	http://www.psycopg.org/psycopg/tarballs/PSYCOPG-2-7/psycopg2-%{version}.tar.gz
 
+# https://github.com/psycopg/psycopg2/commit/ef64493b8913e4069c4422ad14da6de405c445f6
+Patch0:		%{srcname}-test-cursor-async.patch
+
 %{?with_python2:BuildRequires:	python2-debug python2-devel}
 %{?with_python3:BuildRequires:	python3-debug python3-devel}
 
@@ -140,6 +143,7 @@ Zope Database Adapter for PostgreSQL, called ZPsycopgDA
 
 %prep
 %setup -q -n psycopg2-%{version}
+%patch0 -p1
 
 
 %build
@@ -189,6 +193,8 @@ install -d %{buildroot}%{ZPsycopgDAdir}
 cp -pr ZPsycopgDA/* %{buildroot}%{ZPsycopgDAdir}
 %endif
 
+# This test is skipped on 3.7 and has a syntax error so brp-python-bytecompile would choke on it
+%{?with_python3:rm -rf %{buildroot}%{python3_sitearch}/%{srcname}/tests/test_async_keyword.py}
 
 %if %{with python2}
 %files -n python2-psycopg2