Backport patch to fix hash-based pyc's with imp module

For background, see
python/cpython#8130

Signed-off-by: Patrick McCarty <patrick.mccarty@intel.com>

fix-pyc-imp.patch

@@ -0,0 +1,51 @@
+From c16fead8678e080c076ccd57fcb7437698a6636f Mon Sep 17 00:00:00 2001
+From: Benjamin Peterson <benjamin@python.org>
+Date: Thu, 5 Jul 2018 22:27:48 -0700
+Subject: [PATCH] Always return bytes from _HackedGetData.get_data().
+
+Ensure the imp.load_source shim always returns bytes by reopening the file in
+binary mode if needed. Hash-based pycs have to receive the source code in bytes.
+
+It's tempting to change imp.get_suffixes() to always return 'rb' as a mode, but
+that breaks some stdlib tests and likely 3rdparty code, too.
+
+Closes bpo-34056.
+---
+ Lib/imp.py                                                    | 11 ++++-------
+ .../next/Library/2018-07-05-22-45-46.bpo-34056.86isrU.rst     |  3 +++
+ 2 files changed, 7 insertions(+), 7 deletions(-)
+ create mode 100644 Misc/NEWS.d/next/Library/2018-07-05-22-45-46.bpo-34056.86isrU.rst
+
+diff --git a/Lib/imp.py b/Lib/imp.py
+index 866464b245b2..fb83e91810f7 100644
+--- a/Lib/imp.py
++++ b/Lib/imp.py
+@@ -144,15 +144,12 @@ def get_data(self, path):
+         if self.file and path == self.path:
+             if not self.file.closed:
+                 file = self.file
+-            else:
+-                self.file = file = open(self.path, 'r')
++                if 'b' not in file.mode:
++                    file.close()
++            if self.file.closed:
++                self.file = file = open(self.path, 'rb')
+
+             with file:
+-                # Technically should be returning bytes, but
+-                # SourceLoader.get_code() just passed what is returned to
+-                # compile() which can handle str. And converting to bytes would
+-                # require figuring out the encoding to decode to and
+-                # tokenize.detect_encoding() only accepts bytes.
+                 return file.read()
+         else:
+             return super().get_data(path)
+diff --git a/Misc/NEWS.d/next/Library/2018-07-05-22-45-46.bpo-34056.86isrU.rst b/Misc/NEWS.d/next/Library/2018-07-05-22-45-46.bpo-34056.86isrU.rst
+new file mode 100644
+index 000000000000..edc0135efc60
+--- /dev/null
++++ b/Misc/NEWS.d/next/Library/2018-07-05-22-45-46.bpo-34056.86isrU.rst
+@@ -0,0 +1,3 @@
++Ensure the loader shim created by ``imp.load_module`` always returns bytes
++from its ``get_data()`` function. This fixes using ``imp.load_module`` with
++:pep:`552` hash-based pycs.

python3.spec

@@ -1,6 +1,6 @@
 Name:           python3
 Version:        3.7.0
-Release:        155
+Release:        156
 License:        Python-2.0
 Summary:        The Python Programming Language
 Url:            http://www.python.org
@@ -14,6 +14,7 @@ Patch4:         0004-Add-avx2-and-avx512-support.patch
 Patch5:         0005-Build-avx2-and-avx512-versions-of-the-math-library.patch
 Patch6:         0001-Add-pybench-for-pgo-optimization.patch
 Patch7:		hashcompile.patch
+Patch8:         fix-pyc-imp.patch
 
 
 BuildRequires:  bzip2
@@ -101,6 +102,7 @@ The Python Programming Language.
 %patch5 -p1
 %patch6 -p1
 # patch7 -p1
+%patch8 -p1
 
 pushd ..
 cp -a Python-%{version} Python-avx2

release

@@ -1 +1 @@
-155
+156