Fix: iren is the the right interactor where to set picker
Fix: use a dynamic point picker / area picker switch

Revert back the default picker to a point picker.
When in select mode the point picker is replaced with an area picker.
Point picking events modified accordingly.
Merge branch 'fix_pcl_video_player'
added /bigobj compile option to fix build problems with MSVC

to fix "error C1128: number of sections exceeded object file format
limit: compile with /bigobj "
Merge pull request #201 from bouffa/msvc_build_issue_bigobj

added /bigobj compile option to fix build problems with MSVC
Merge branch 'master' of https://github.com/PointCloudLibrary/pcl