Move bash_profile to profile

Moving this file so that when bash is started via `sh` it correctly
loads my profile.
Add proper make targets
Explicitly set the shell to bash in Makefile
Add new /etc/profile to supersede /etc/bashrc
Remove nerdtree bundle from vimrc
Clean up comment
Renaming some make targets
Move sys_inputrc to etc/inputrc
Move sys_screenrc to etc/screenrc
Fix spelling error
Rearrange order for consistency
Minor Makefile cleanups
Remove no longer needed bachrc
Add ~/.bash_aliases
Cleanup ~/.profile
Add /etc/profile.d to hold custom, global, settings
Improve Makefile to use $(HOME) rather than '~'
Kill'n tilde (~) in shell scripts
Merge branch 'master' of github.com:robertkluin/dotfiles