Added a patch and the builddeps to allow building rcm from source.
- Feature: Expand ~ in DOTFILES_DIR
- Feature: Expand ~ in DOTFILES_DIR hooks
- BUGFIX: Fix cd for paths beginning with hyphen (-)
- BUGFIX: Fallback the LOGNAME from whoami
- BUGFIX: Directories with spaces in rcup(1)
- BUGFIX: Use =, not ==, in test(1)
- Documentation improvements