Create symlink to Mercurial directory
Create symlink to Mercurial directory

This is necessary for the tests to pass when building locally with
one of the Debug70000* configurations.

sillsdev/LfMerge,ermshiperete/LfMerge,sillsdev/LfMerge,ermshiperete/LfMerge,ermshiperete/LfMerge,sillsdev/LfMerge