bpo-11191: skip the distutils test 'test_search_cpp' when AIX and not gcc as compiler, etc.

.gitattributes

@@ -26,6 +26,7 @@ Lib/test/decimaltestdata/*.decTest -text
 Lib/test/test_email/data/*.txt -text
 Lib/test/xmltestdata/* -text
 Lib/test/coding20731.py -text
+Lib/test/test_importlib/data01/* -text
 
 # CRLF files
 *.bat text eol=crlf
@@ -36,3 +37,20 @@ Lib/test/coding20731.py -text
 *.proj text eol=crlf
 PCbuild/readme.txt text eol=crlf
 PC/readme.txt text eol=crlf
+
+# Generated files
+# https://github.com/github/linguist#generated-code
+Include/graminit.h          linguist-generated=true
+Python/graminit.h           linguist-generated=true
+Modules/clinic/*.h          linguist-generated=true
+Objects/clinic/*.h          linguist-generated=true
+PC/clinic/*.h               linguist-generated=true
+Python/clinic/*.h           linguist-generated=true
+Python/importlib.h          linguist-generated=true
+Python/importlib_external.h linguist-generated=true
+Include/Python-ast.h        linguist-generated=true
+Python/Python-ast.c         linguist-generated=true
+Include/opcode.h            linguist-generated=true
+Python/opcode_targets.h     linguist-generated=true
+Objects/typeslots.inc       linguist-generated=true
+Modules/unicodedata_db.h    linguist-generated=true

.github/CODEOWNERS

@@ -8,7 +8,9 @@
 **/*asyncio*                  @1st1 @asvetlov
 
 # Core
+**/*context*                  @1st1
 **/*genobject*                @1st1
+**/*hamt*                     @1st1
 
 # Hashing
 **/*hashlib*                  @python/crypto-team

.github/CONTRIBUTING.rst

@@ -8,6 +8,10 @@ Build Status
 
   + `Stable buildbots <http://buildbot.python.org/3.x.stable/>`_
 
+- 3.7
+
+  + `Stable buildbots <http://buildbot.python.org/3.7.stable/>`_
+
 - 3.6
 
   + `Stable buildbots <http://buildbot.python.org/3.6.stable/>`_

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,10 +1,30 @@
-!!! If this is a backport PR (PR made against branches other than `master`),
+<!--
+Thanks for your contribution!
+Please read this comment in its entirety. It's quite important.
+
+# Pull Request title
+
+It should be in the following format:
+
+```
+bpo-NNNN: Summary of the changes made
+```
+
+Where: bpo-NNNN refers to the issue number in the https://bugs.python.org.
+
+Most PRs will require an issue number. Trivial changes, like fixing a typo, do not need an issue.
+
+# Backport Pull Request title
+
+If this is a backport PR (PR made against branches other than `master`),
 please ensure that the PR title is in the following format:
+
 ```
 [X.Y] <title from the original PR> (GH-NNNN)
 ```
+
 Where: [X.Y] is the branch name, e.g. [3.6].
 
 GH-NNNN refers to the PR number from `master`.
 
-PLEASE: Remove this headline!!!
+-->

.github/appveyor.yml

@@ -1,18 +1,38 @@
-version: 3.7build{build}
+version: 3.8build{build}
 clone_depth: 5
 branches:
   only:
     - master
     - /\d\.\d/
     - buildbot-custom
 cache:
-  - externals -> PCbuild\*
+  - externals -> PCbuild
+before_build:
+  - ps: |+
+      if ($env:APPVEYOR_RE_BUILD) {
+        echo 'Doing full build due to re-build request.'
+      } elseif (!$env:APPVEYOR_PULL_REQUEST_HEAD_COMMIT) {
+        echo 'Not a PR, doing full build.'
+      } else {
+        git fetch -q origin +refs/heads/$env:APPVEYOR_REPO_BRANCH
+        $mergebase = git merge-base HEAD FETCH_HEAD
+        $changes = git diff --name-only HEAD $mergebase | grep -vE '(\.rst$)|(^Doc)|(^Misc)'
+        If (!$changes) {
+          echo 'Only docs were updated, stopping build process.'
+          Exit-AppveyorBuild
+        } else {
+          echo 'Doing full build due to non-doc changes in these files:'
+          echo $changes
+        }
+      }
+
+
 build_script:
-- cmd: PCbuild\build.bat -e
-- cmd: PCbuild\win32\python.exe -m test.pythoninfo
+  - cmd: PCbuild\build.bat -e -p x64
+  - cmd: PCbuild\amd64\python.exe -m test.pythoninfo
 test_script:
-- cmd: PCbuild\rt.bat -q -uall -u-cpu -rwW --slowest --timeout=1200 --fail-env-changed -j0
+  - cmd: PCbuild\rt.bat -x64 -q -uall -u-cpu -u-largefile -rwW --slowest --timeout=1200 --fail-env-changed -j0
 environment:
   HOST_PYTHON: C:\Python36\python.exe
 image:
-- Visual Studio 2017
+  - Visual Studio 2017

.gitignore

@@ -113,3 +113,5 @@ Tools/ssl/amd64
 Tools/ssl/win32
 .vs/
 .vscode/
+gmon.out
+.mypy_cache/