Revision 457041

Update CMake to 3.10.1

 - https://blog.kitware.com/cmake-3-10-1-available-for-download/
   - flang support
   - changes to automoc policies
   - support for FreeBSD package generation with CPack

Necessary fixes to other ports:
 - cad/openvsp make search for libxml explicit
 - math/scalapack force C compiler to be compatible with mpi
 - deskutils/kdepim4 fix incorrect sources list
 - www/qt5-webkit fix incorrect sources list

Thanks to Antoine for the multiple exp-runs.

PR:		223872
Approved by:	tcberner (mentor)
Differential Revision:	https://reviews.freebsd.org/D13210