Add and build ssl
Add and build xenstore library
oclock: remove dependency on non-devel package (which is currently empty)
lwt: depend on SSL, generate lwt.ssl package
cohttp: build with lwt (needs lwt.ssl in particular)
xenstore: add to sources.csv and build log
message-switch: add correct dependencies

However the actual code needs to be updated to use cohttp 0.9.8...
Merge pull request #55 from djs55/make-srpms

Make srpms