Files addition to recent opened files if File->SaveAs executed
Merge pull request #95 from ra3xdh/saveas_to_recent

Added recently 'saved as' files to recent opened menu
remove HAVE_CONFIG in source
remove qt3to4

libcomp.cpp libcomp.h
optimizedialog.h
spicefile.h
subcircuit.cpp
verilogfile.cpp verilogfile.h
vhdlfile.cpp vhdlfile.h

except componentdialog and spicedialog
clean vacomponent
move Q3layout to Qt4

Q3HBox->QHBoxLayout
Q3VBox->QVBoxLayout
Q3GridLayout->QGridLayout
move QListBox to QListWidget
modify indent
clean component
Merge pull request #96 from yodalee/feature-clean-include-in-components

Feature clean include in components
Merge pull request #97 from yodalee/feature-remove-qt3-in-spicedialog

remove qt3 in component/spicedialog
remove qtgui include in qucs, syntax, schematic
remove qtgui include in exportdialog
remove qtgui include in diagrams/marker
remove qtgui include in diagrams/diagramdialog
remove qtgui in main directory
remove qtgui include in dialog/cppfile
remove qtgui in diagrams/cppfile
remove qtgui in components/cppfile
adjust math.h include