[pygame] Updates to distutils building

[Lenard Lindstrom <len-l@xxxxxxxxx>]

I have made some Windows upgrades to setup.py and related scripts. 
Originally I set out to just get Pygame to compile under MSYS. This 
involved two changes to config_msys.py and config.py: replacing os.popen 
with subprocess.Popen so that shell scripts would run, and fixing calls 
to raw_input so the prompt would display on the MSYS console. But I have 
gone further.

The paths written to Setup in an MSYS build are now Windows paths. 
distutils does not execute commands with sh.exe.

The hard coded DLL file paths in setup.py are replaced with proper 
searches done by config_msys.py and config_win.py. The paths are written 
to Setup. Now setup.py is VC/MinGW agnostic.

Numeric is removed from setup.in and the various config_*.py modules. It 
is unnecessary when the Numeric header files are included with the 
Pygame code.

So should I submit these changes? If so, should it be as one single 
patch, or several smaller ones? I have compiled and installed Pygame for 
Pythons 2.4 and 2.5 using MinGW. I also confirmed config_win.py found 
all the dependency directories I used. I will do some further unit testing.

--
Lenard Lindstrom
<len-l@xxxxxxxxx>