Add test for memory_maps() which loads a library by path

[giampaolo]

Perhaps this is a bit tricky. Anyway, Process.memory_maps() lists the .so libraries loaded by the process. It would be nice to add a test that:

• copies an existent loaded .so library somewhere (another path)
• load the copied library with ctypes
• call memory_maps() and make sure the new loaded library appears in the list

This would pave the way for testing how memory_maps behave with unicode paths (see: #1040).

Some refs:

• UNIX: http://stackoverflow.com/questions/2327344/ctypes-loading-a-c-shared-library-that-has-dependencies
• Windows: http://stackoverflow.com/questions/7586504/python-accessing-dll-using-ctypes

[giampaolo]

@himanshub16 maybe this is something you want to try?

[giampaolo]

Actually nevermind. It's easier than I thought.