By changing to the Windows GetFileAttributes API in nt._isdir we can figure
out if the path is a directory without opening the file via os.stat. This has
the minor benefit of speeding up os.path.isdir by at least 2x for regular
files and 10-15x improvements were seen on symbolic links (which opened the
file multiple times during os.stat). Since os.path.isdir is used in
several places on interpreter startup, we get a minor speedup in startup time.

By changing to the Windows GetFileAttributes API in nt._isdir we can figure
out if the path is a directory without opening the file via os.stat. This has
the minor benefit of speeding up os.path.isdir by at least 2x for regular
files and 10-15x improvements were seen on symbolic links (which opened the
file multiple times during os.stat). Since os.path.isdir is used in
several places on interpreter startup, we get a minor speedup in startup time.

Lehtinen.

children and raises BrokenProcessPool in such a situation.  Previously it
would reliably freeze/deadlock.

temporary symbolic link.

Found by LLVM/clang 2.9.

Found by LLVM/clang 2.9.

prevent accidental assignment.

Silences a warning from LLVM/clang 2.9.

always appended to the include directories regardless of whether it
was already in the list of directories. This could cause issue if
sqlite was installed in the same location as another install of
Python. Now a check is done to make sure the directory is not included
twice.

instead of an active loop (while True: pass) to limit race conditions.

Using sets in tests did not check whether the values were written in the right
section or with the right key.

:class:`multiprocessing.Process`.  Also, fix Process.join() to not use
polling anymore, when given a timeout.

Patch by Catalin Iacob.

error if faulthandler.dump_tracebacks_later() is missing (e.g. if Python is
compiled without threads).

Add TESTTIMEOUT variable (default: 3600 seconds). Use TESTTIMEOUT=0 to disable
the timeout.
***
fix

It's unclear what this was referring to; most likely, it was about sockets
that the application had already closed, in which case it's not a sockets
problem, but an application problem.