Create base framework called SeashoreKit.
More changes.
meh
Merge branch '64bit' into SeashoreKit

Conflicts:
	Seashore/Seashore.xcodeproj/project.pbxproj
	Seashore/source/application/SeaPlugins.h
	Seashore/source/extra/Bitmap.h
Have more plug-ins use the SeashoreKit framework.
More work and general fiddling.
More work
More work
Ah, there.
All the plug-ins should be migrated.