qisrc modules

• qisrc.git – Git related tools
• qisrc.manifest – Parsing manifest files
• qisrc.git_config – Handling git configurations
• qisrc.project - git projects in a GitWorkTree
• qisrc.worktree – Managing git projects
• qisrc.sync – Synchronize a worktree with a manifest
• qisrc.review – Using code review (gerrit)