Use EnvironGuard on BuildExtTestCase to save/restore os.environ, to fix the
following warning:
Warning -- os.environ was modified by test_distutils
MSVCCompiler.initialize() of distutils.msvc9compiler modifies
os.environ.
Use EnvironGuard on InstallTestCase and UtilTestCase.
Backport fixes from master to prevent the following warning:
Warning -- os.environ was modified by test_distutils
This changes the main documentation, doc strings, source code comments, and a
couple error messages in the test suite. In some cases the word was removed
to fix the grammar.
As of Xcode 7, SDKs for Apple platforms now include textual-format stub
libraries whose file names have a .tbd extension rather than the
standard OS X .dylib extension. The Apple compiler tool chain handles
these stub libraries transparently and the installed system shared libraries
are still .dylibs. However, the new stub libraries cause problems for
third-party programs that support building with Apple SDKs and make
build-time decisions based on the presence or paths of system-supplied
shared libraries in the SDK. In particular, building Python itself with
an SDK fails to find system-supplied libraries during setup.py's build of
standard library extension modules. The solution is to have
find_library_file() in Distutils search for .tbd files, along with
the existing types (.a, .so, and .dylib). Patch by Tim Smith.
The old project files move to PC/VS9.0 and remain supported.
VS2008 is still required to build 2.7; VS2010 (or later, plus Windows SDK 7.1)
is *also* required to use the new project files.
