Added support for removing NULL in sl.in.processVarargin.m
Added support for removing NULL in sl.in.processVarargin.m

JimHokanson/matlab_standard_library,GregGoldman/matlab_standard_library,GregGoldman/matlab_standard_library,JimHokanson/matlab_standard_library,GregGoldman/matlab_standard_library,JimHokanson/matlab_standard_library,GregGoldman/matlab_standard_library,JimHokanson/matlab_standard_library,GregGoldman/matlab_standard_library,JimHokanson/matlab_standard_library