Create block-backend-swift.c

swift backend
Update block-backend-swift.c

Nothing .
Update block-backend.c

add swift block
Update Makefile.am

add swift block backend
Update Makefile.am

add swift block backend
Update Makefile.am

add swift block backend
Update Makefile.am

add swift block backend
Update Makefile.am

add swift block backend
Merge branch 'swift'

Conflicts:
	httpserver/Makefile.am
	lib/Makefile.am
	monitor/Makefile.am
	server/Makefile.am
	server/gc/Makefile.am