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
Merge pull request #107 from yodalee/remove-some-q3ptrlist

Remove some q3ptrlist