Convert module identifiers to OS paths in Npm.require.
Convert module identifiers to OS paths in Npm.require.

Part of #6500.

AnthonyAstige/meteor,chasertech/meteor,lorensr/meteor,chasertech/meteor,DAB0mB/meteor,Hansoft/meteor,AnthonyAstige/meteor,4commerce-technologies-AG/meteor,jdivy/meteor,nuvipannu/meteor,Hansoft/meteor,DAB0mB/meteor,mjmasn/meteor,jdivy/meteor,lorensr/meteor,AnthonyAstige/meteor,AnthonyAstige/meteor,Hansoft/meteor,AnthonyAstige/meteor,4commerce-technologies-AG/meteor,mjmasn/meteor,jdivy/meteor,chasertech/meteor,4commerce-technologies-AG/meteor,4commerce-technologies-AG/meteor,chasertech/meteor,chasertech/meteor,jdivy/meteor,chasertech/meteor,lorensr/meteor,nuvipannu/meteor,mjmasn/meteor,DAB0mB/meteor,nuvipannu/meteor,Hansoft/meteor,lorensr/meteor,Hansoft/meteor,mjmasn/meteor,mjmasn/meteor,4commerce-technologies-AG/meteor,jdivy/meteor,jdivy/meteor,lorensr/meteor,DAB0mB/meteor,mjmasn/meteor,chasertech/meteor,DAB0mB/meteor,DAB0mB/meteor,nuvipannu/meteor,jdivy/meteor,DAB0mB/meteor,Hansoft/meteor,4commerce-technologies-AG/meteor,nuvipannu/meteor,lorensr/meteor,Hansoft/meteor,4commerce-technologies-AG/meteor,AnthonyAstige/meteor,nuvipannu/meteor,lorensr/meteor,nuvipannu/meteor,mjmasn/meteor,AnthonyAstige/meteor,AnthonyAstige/meteor