Fix `make check' in cmake does not generate data
Add --enable-multiple-IM option.
Merge branch 'master' into general_index
Merge branch 'ogi' into general_index
Revert "Add --enable-multiple-IM option."

This reverts commit 2f2a6933ebb06caa298ff20c242c4decbe03b404.
Patch "Don't let tools/ do too much thing."
Add '_' in open_DICT_files to fix path.