Bug 949875 - Delay import some WebIDL modules; r=glandium

This prevents excessive dependencies on config.status. Those extra
dependencies make WebIDL developer workflow inefficient.

--HG--
extra : rebase_source : 37ba82773fe6d873e25fc8b61fef44ec9f191ebe
extra : amend_source : 3fa0796f096efdbe6a74138ea0258f68cbcf4071
Bug 949304 - Print Makefile counts during config.status; r=glandium

We now capture and print the number of Makefile.in and the number of
generated Makefile as part of config.status. This should give us a nice,
easy to extract metric going forward.

--HG--
extra : rebase_source : 48a3e9f66975505dec76746703875b2364dedc87