R. Elliott Childre 221616a1b7 Fixes: 6d2ac3e3140 ("fix grammar download script")
The git submodle entry point is "grammar_mutator" not "grammar-mutator"

The build script fails without this
2021-03-30 11:05:19 -04:00
..

Grammar-Mutator

This is just a stub directory that will clone the real grammar mutator directory.

Execute ./build_grammar_mutator.sh to set everything up.