ignore .so files and Vim temporaries
use pkgconfig to get PCL configuration
Updated to support PCL 1.6+

Conflicts:
	setup.py
build with PCL 1.7.x
Merge pull request #20 from larsmans/pkgconfig

Use pkgconfig to find PCL configuration
Merge pull request #21 from larsmans/pcl17

PCL 1.7 support