If the child process exited with a non-zero code, don't strip the
last line of stdout anymore.

Add also a sanity check in accumulate_result().

…ython#1515)

compiled out-of-tree (builddir != srcdir). (see also bpo-15366)

…ython#1264)

a submodule to a name are now supported.

)

of regular expressions.

…thon#1510)

Custom msbuild properties passed as command line need to be passed too when calling `Build` when doing PGO build.

Rewrite sigwaitinfo() and sigtimedwait() unit tests for EINTR using
pthread_sigmask() to fix a race condition between the child and the
parent process.

Remove the pipe which was used as a weak workaround against the race
condition.

sigtimedwait() is now tested with a child process sending a signal
instead of testing the timeout feature which is more unstable
(especially regarding to clock resolution depending on the platform).

…difiers. (python#1490)

Now allowed several subsequential inline modifiers at the start of the
pattern (e.g. '(?i)(?s)...').  In verbose mode whitespaces and comments
now are allowed before and between inline modifiers (e.g.
'(?x) (?i) (?s)...').

…#1480)

* bpo-28787: Fix out of tree --with-dtrace builds

* Unsilence directory creation

* Add Misc/NEWS and Misc/ACKS entries

when there are no more `await` or `yield (from)` before return in coroutine,
cancel was ignored.

example:

    async def coro():
        asyncio.Task.current_task().cancel()
        return 42
    ...
    res = await coro()  # should raise CancelledError

* bpo-30308: Code coverage for argument in random.shuffle

* bpo-30308: Code coverage for argument in random.shuffle

* bpo-30308: Code coverage for argument in random.shuffle

Using a response file will eliminate the headache associated with batch argument/quote processing.

For example I unsucessfully compiled python with visualcpptools when specifying VSInstallDir in the batch file (cannot find vcruntime.h)

```batch
build.bat -p x64 -e -M --no-tkinter  "/p:VCInstallDir=%VCInstallDir%"
```

but it build successfully when specifying it in a response file

msbuild.rsp:
```
/p:VCInstallDir=%VCInstallDir%
```