(DirectoryPosition): added constructor from filename.
rearranged archive parameters widgets.
added CanCreate property.
implemented XP3 archive creation.
removed manual bindings from code behind.
added bindings.
(ArcView): MemoryMappedFile should not dispose underlying file stream itself.
(ArchiveFormat): added CanCreate virtual property.
(Adler32): use "unsafe" implementation. added appropriate methods.
restore busy state after archive parameters dialog popup.
disable watching after directory changes while archive is being created.
refined filename choose dialog properties.