Call Npm.require("meteor-babel") only when needed.
Call Npm.require("meteor-babel") only when needed.

In practice, the non-isopacket version of meteor-babel is only used by the
shell-server package, so this saves ~200ms of reload time.

mjmasn/meteor,mjmasn/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor,Hansoft/meteor,mjmasn/meteor,mjmasn/meteor,Hansoft/meteor,mjmasn/meteor,Hansoft/meteor