Fix python shared library loading
Fix python shared library loading

Python won't find the shared library under /usr/local unless
LD_LIBRARY_PATH is used. This change tries to guess the exact location
by knowing the files will likely be installed relative to each other:

  <path>/lib/lib96BoardsGPIO.so
  <path>/lib/python2.7/dist-packages/gpio_96boards.py

Signed-off-by: Andy Doan <09032574f02f3d5e4e489a718b8705f28c474e94@linaro.org>

96boards/96BoardsGPIO,96boards/96BoardsGPIO,96boards/96BoardsGPIO,96boards/96BoardsGPIO