Merge pull request #5 from LiuLang/master

pull update from upstream
v3.3.7 build for gentoo
v3.3.7 build for Archlinux
dependencies changed for PKGBUILD
rewrite ebuild and rebuild v3.3.7 for Gentoo
Merge branch 'master' of https://github.com/MJsaka/bcloud-packages
Merge pull request #50 from MJsaka/master

v3.3.7 build for Archlinux and Gentoo