Update setup.py to accommodate 64 bit Flycapture2

Determines whether FlyCapture2 root folder is in "C:/Program Files (x86)/" or "C:/Program Files/" and whether its library folder is "/lib/C" or "/lib64/C", depending on whether Flycapture2 is 32 or 64 bit release.
Merge pull request #1 from carlschoonover/patch-1

Update setup.py to accommodate 64 bit Flycapture2