Fix small buglet in closing the last window of a view when there are multiple views in one ZMap window.

changed the focus_item (FooCanvasItem *) to focusItemSet (GList *) in the window struct
We need to be able to support multiple selected/highlighted items.

quick name change FeatureQuery -> FToIQuery

Make views _always_ have at least one window. Improve state transition handling, add state change callback for layer above us.

add function to show application information and function to return a user choice to the application.

use the #defines for item G_OBJECT keys

#defines for item G_OBJECT keys

and added zMapFeatureCreateFromStandardData

which will be read instead of  config file. If str is NULL config file
is read.

add app. exit callback to controls callbacks interface. add calls to control gui state, buttons etc. and code to show zmap state.

put revcomp strand record in view. Make first part of improvements to state to implement stop/reload of views.