CNTK: Fix compilation issues due to BoostFS changes.

Things need to be cast to strings before I can add a suffix.
StereoSettings: Proceed without any stereo.default
RPC: Have Map Transform listed as a convex function
stereo_tri: Drop cropping of PC file.

This breaks assumptions in point2dem.
build_vw_asp: added build script
build_vw_asp: fix git commands and number of processors
build_vw_asp: specify gcc4.7
build_vw_asp: minor changes
build_vw_asp: laszip fix