chown() to root under certain circumstances.

Issue #14589: Update certificate chain for sha256.tbs-internet.com, fixing a test failure in test_ssl.

Issue #13889: On MSVC builds, set FPU control word at runtime for all string <-> float conversions.  Patch by Samuel Iseli and Stefan Krah.

Update the various project files with Python/random.c which was recently added.

On my old Windows XP computer:
- VS8.0 works reasonably.
- I don't have the VS7.1 compiler.
- VC6 does not compile, at least with the SDK shipped with the compiler (12 years ago!); newer SDKs might work.

Patch by Serhiy Storchaka.

Original patch by Tshepang Lekhonkhobe.

Issue 10484 - Incorporate improvements to CGI module - Suggested by Glenn Linderman. Refactor code and tests