[arch-dev-public] migrate libusb1 to libusb and add libusb-compat to [core]

[Allan McRae]

The rebuild is complete and moved to [testing]/[community-testing].

Note that some packages in the TODO list were excessive as the 
dependency update was handled further down the dependency chain. So do 
not be concerned if a package you though needed rebuilt is not there... 
   unless of course it should really have been there, in which case file 
a bug!

I'll leave the signoff email to Tobias P given he did the builds for [core].

Allan