v3.5.1-1 built for Arch Linux

为 Arch Linux 编译 v3.5.1-1
1. 打包脚本更新至 3.5.1-1 ，去除依赖 webkitgtk
2. bcloud 安装包更新至 3.5.1-1
3. 更新 checksum.txt 中的包校验码
Merge pull request #75 from Firef0x/master

v3.5.1-1 built for Arch Linux
rpm v3.5.1-1.fc20 built
Merge pull request #77 from wangjiezhe/master

rpm v3.5.1-1.fc20 built
v3.5.1-2 built for debian