added check whether all semi-landmarks are declared either as outlines or surfaces.
code cleaning in tweakU.cpp
tidy up in CreateL
more tweaking and code profiling in sliding subroutines
removed unnecessary output from calcGamma (legacy debug stuff)
reenabled weights in calc_Tang_U
fixed ignore option if missingList is specified
more speed and memory tweaking in generating Lsubk3 and by forcing L to be symmetric
removed unused output of L from CreateL