Compile for Linux AND Windows

I combined some suggestions from others that had issues with Windows. I also made it a bit easier to identify a JDK_HOME and JRE_HOME.

Here's the system I compiled the attached binary on:
64-bit Windows 7 Ultimate
32-bit Python 2.7.6
32-bit Oracle JDK 1.7.0_25
MinGW

To run successfully in Windows:
Install a JDK and add a JAVA_HOME environment variable that points to the JDK folder
Install Cython from http://www.lfd.uci.edu/~gohlke/pythonlibs/#cython
Install jnius from the attached executable or build your own module from source

https://github.com/kevlened/pyjnius/releases/tag/v1.1