build paths from configuration variables cached in _sysconfigdata.py, as
is already done for the installed Makefile.  This avoids a distuils test
case failure in test_ldshared_value.

are unset during test execution.

tailoring for universal builds by factoring out common OS X-specific
customizations from sysconfig, distutils.sysconfig, distutils.util,
and distutils.unixccompiler into a new module _osx_support that can
eventually also be used by packaging.

Patch by Flávio Ribeiro.

Patch by Serhiy Storchaka.

visible and to place it with other micro-benchmarks (e.g.
stringbench).

This should make the Linux distros happy as it is now easier to leave
importlib's tests out of their base Python distribution.

of importing a symlinked package.

no difference anymore between __import__ and importlib.__import__.

Patch by Flávio Ribeiro.

Patch by Flávio Ribeiro.

Close #15386: There was a loophole that meant importlib.machinery and imp would sometimes reference an uninitialised copy of importlib._bootstrap

the source line.  Such errors can't be reported anyway.  This makes error
reporting work, even if the "io" module can't be loaded.

Patch by Julia Lawall.