Update to Python 3.9.0a3

Added patches 340 and 341 (backports from master)

python39.spec

@@ -14,7 +14,7 @@ URL: https://www.python.org/
 #  WARNING  When rebasing to a new Python version,
 #           remember to update the python3-docs package as well
 %global general_version %{pybasever}.0
-%global prerel a2
+%global prerel a3
 %global upstream_version %{general_version}%{?prerel}
 Version: %{general_version}%{?prerel:~%{prerel}}
 Release: 1%{?dist}
@@ -278,6 +278,20 @@ Patch274: 00274-fix-arch-names.patch
 # Ideally, we should talk to upstream and explain why we don't want this
 Patch328: 00328-pyc-timestamp-invalidation-mode.patch
 
+# 00340 #
+# Add test.test_import.data.unwritable package to makefile
+# Fixed upstream: https://bugs.python.org/issue39459
+Patch340: 00340-makefile-missing-test.patch
+
+# 00341 #
+# Fix test_zipfile.test_add_file_after_2107()
+# XFS filesystem is limited to 32-bit timestamp, but the utimensat()
+# syscall doesn't fail. Moreover, there is a VFS bug which returns
+# a cached timestamp which is different than the value on disk.
+# Workarounds https://bugzilla.redhat.com/show_bug.cgi?id=1795576
+# Workarounded upstream: https://bugs.python.org/issue39460
+Patch341: 00341-bpo-39460.patch
+
 # (New patches go here ^^^)
 #
 # When adding new patches to "python" and "python3" in Fedora, EL, etc.,
@@ -625,6 +639,8 @@ rm Lib/ensurepip/_bundled/*.whl
 %patch251 -p1
 %patch274 -p1
 %patch328 -p1
+%patch340 -p1
+%patch341 -p1
 
 
 # Remove files that should be generated by the build
@@ -1567,6 +1583,9 @@ CheckPython optimized
 # ======================================================
 
 %changelog
+* Mon Jan 27 2020 Victor Stinner <vstinner@python.org> - 3.9.0~a3-1
+- Update to Python 3.9.0a3
+
 * Thu Dec 19 2019 Miro Hrončok <mhroncok@redhat.com> - 3.9.0~a2-1
 - Rebased to Python 3.9.0a2