lscm_parametrization.h: first version.

git-svn-id: svn://svn.code.sf.net/p/vcg/code/trunk/vcglib@5501 e8973e21-934d-0410-ac44-de4585f5606d
Added the possibility of passing the weights to set in the matrix of the implicit smoother.

git-svn-id: svn://svn.code.sf.net/p/vcg/code/trunk/vcglib@5502 e8973e21-934d-0410-ac44-de4585f5606d