show message when gtk+2.0 is used and appindicator3-0.1 is installed && appindicator-0.1 is not installed in configure close #475
Merge pull request #477 from hime-ime/configure

show message when gtk+2.0 is used and appindicator3-0.1 is installed && appindicator-0.1 is not installed in configure close #475