Saleem Abdulrasool b67d5f0cf7 test: convert rm -rf && mkdir -p into %empty-directory ...

This converts the instances of the pattern for which we have a proper
substitution in lit.  This will make it easier to replace it
appropriately with Windows equivalents.

2018-03-06 14:30:54 -08:00

..

Outputs

…

basic.swift

…

callexpr.swift

…