8210226: Add support for multiple project folders to idea.sh
Summary: Overhaul templating logic for idea.sh; add support for -o option
Reviewed-by: erikj, ihse
<?xml version="1.0" encoding="UTF-8"?>
<project version="4">
<component name="VcsDirectoryMappings">
<mapping directory="###ROOT_DIR###" vcs="hg4idea" />
</component>
</project>