GUI: add CLI equivalent dialog (#163); use spinboxes in Sequence dialog

and restrict sequence to max 10,000, add button icons;
   make Export dialog sizable and show every 100 results, add button icon;
   fix saving CHANNEL option, fix Export painting main window (Windows), fix
   guard descent not-resetting
 qzint: add getAsCLI(), warnLevel(), extra isStackable()/isComposite() etc
 Add ZBarcode_BarcodeName()
 manual: doc above, some fixes, tweaks

frontend_qt/frontend_vc8.pro

@@ -6,20 +6,23 @@ CONFIG += 	warn_on \
 			uitools
 
 FORMS = mainWindow.ui \
-		extSequence.ui \ 
+		extCLI.ui \
+		extSequence.ui \
 		extExport.ui \
 		extData.ui
 
 HEADERS = 	mainwindow.h \
 			barcodeitem.h \
+			cliwindow.h \
 			datawindow.h \
 			exportwindow.h \
 			sequencewindow.h \
 			qzint.h
 
-SOURCES = 	main.cpp \ 
+SOURCES = 	main.cpp \
 			mainwindow.cpp \
 			barcodeitem.cpp \
+			cliwindow.cpp \
 			datawindow.cpp \
 			exportwindow.cpp \
 			sequencewindow.cpp
@@ -30,5 +33,5 @@ RESOURCES = resources.qrc
 INCLUDEPATH += ../backend
 
 RC_FILE = ./res/qtZint.rc
-         
+
 LIBS = QtZint2.lib