correct the spelling of Assemblier.isUpperSymmetric()
extract 2 private methods of MFProcessor
add interface ProcessResult and a simple implementation
take ProcessResult to seperate assembler and solve() in MFProcessor
fix bug of null pointer of MLSLevelSetDemo
Merge branch 'master' into put_away_mf_processor
add MFSolver and implement it by RcmSolver
use MFSolver and RcmSolver to fill the MFProcessor.solve()