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

This avoids crashing the server loop when a signal is received.
Patch by Jerzy Kozera.

Issue #14505: Fix file descriptor leak when deallocating file objects created with PyFile_FromString().

Patch by Suman Saha.