Parameters 8 and 9 to store and retrieve current view

[petermad]

Currently we have:

cm_*ByName, cm_*ByExt, cm_*BySize, cm_*ByDateTime
8: Store current sort order, sort direction and additional sort columns internally
9: Restore all sort order parameters stored with option 8

cm_*UserSpec
8: Store current file filter (including "All Files" and "Programs")
9: Restore previously stored file filter

It would be very useful with similar parameters for the View commands: cm_*Short, cm_*Long, cm_*Comments, cm_*Tree, cm_*Thumbs, cm_*CustomViewX and maybe cm_*QuickView

It actually only have to be implemented as parameters for one of the views (e.g. cm_*Long 8 and cm_*Long 9) for storing/restoring any of the views mentioned here above.