Squashed 'libertree-frontend-ramaze/' changes from 09ef4da..6bd833a

6bd833a fix: GEM_HOME instead of GEM_PATH

git-subtree-dir: libertree-frontend-ramaze
git-subtree-split: 6bd833aed918df26e8517a8a7acde2b8777826b6
Merge commit 'ff17011e2eca31ced8bf630e374e1d0d15df5411'