move QValueList to QList in schematic_file
change categories in module to QList<Category *>

Simple API change
Q3Ptrlist iterate change to QList const iterator
change getModulesNr return value to -1 if no such category
since there will be category locate at 0
change Content in module to QList<Module *>
move BoxList in sweepdialog to Qlist
move valuelist, nodelist to QList in sweepdialog
move hierarchyhistory in qucs to QStack
remove schematic include
move id_text Parameter to QList

Move Q3PtrList in Dialogs/sweepdialog:
Move Q3PtrList<QString> module: Categories:
Move Q3PtrList<QString> HierarchyHistory in qucs
Move Q3PtrList<subparameter> in painting/id_text
Move Q3ValueList<DigiSignal> in schematic_file
move undo, redo to QVecotr with index
fix typo
fix crash loading unregistered VA component
Merge pull request #3 from guitorri/fix-q3ptrlist-crash

Fix q3ptrlist crash
Fixed Qt3/Qt4 detection in Slackware.

Since in Slackware when both Qt3 at Qt4 are installed the Qt4 path is in QT4DIR while QTDIR contains the path to Qt3 a check has been added to use QT4DIR, if defined.
Added new application settings.

Added largeFontSize and TextAntiAliasing to the settings dialog and the related load/save functions. Corrected a typo in one of the settings name and fixed some default values.
Updated ViewPainter::init() calls since function definition changed (anti-aliasing removed from parameters, now handled directly in ViewPainter::init() )
Changed the ViewPainter::init() parameters.

Removed anti-aliasing from the ViewPainter::init() parameters, now the function check directly the QucsSettings to see whether anti-aliasing should be enabled.
Merge pull request #120 from in3otd/issue_112

Issue 112: add textantialias and antialias property in QucsSettingDialog.
Merge pull request #107 from yodalee/remove-some-q3ptrlist

Remove some q3ptrlist
change search dialog ui
replace findText in searchdialog with signal emit
remove find again action