add drawantialiasing properties and save/load
modify viewpainter init, add AA parameter
prevent iterate list every time
remove some redundant if branch
changed return type of syntesize() to int to allow returning operation status
syntesize() now returns operation status
syntesize() now returns operation status. Made Newton-Raphson more robust.
status bar now shows appropriate message if synthesis failed
corrected typo to correctly set default value in case the anti-aliasing setting is not found in the settings file
corrected call to Painter.init() which was missing some parameters and caused the anti-alias setting not to work properly
Merge pull request #1 from in3otd/issue70-antialiasing-as-option

Issue70 antialiasing as option
Fix typo and parameter errors
clear clang warning

qucstrans.cpp:988:7: warning: variable 'status' is used uninitialized whenever 'if' condition is false [-Wsometimes-uninitialized]
  if (TransLineTypes[getTypeIndex()].line)
Import QucsStudio Filter Synthesis source code
Add GPL informations in modifed files
Removed ActiveFilter. See discussion: https://github.com/Qucs/qucs/pull/15
cleanup qucs-filter/Makefile.am
update qucs-filter/CMakeLists.txt
fix warning deprecation warning

./material_props.h:23:21:
 warning: conversion from string literal to 'pChar' (aka 'char *') is deprecated [-Wc++11-compat-deprecated-writable-strings]
update deprecated Qt header includes
Merge pull request #79 from yodalee/issue70-antialiasing-as-option

Issue70 antialiasing as option