Documentation for the bootstrapping process.

After hand-holding one too many newcomer in the past few days I decided this process needs to be documented so we can just point to a file.  The following changes have been made:

 1. INSTALL_CVS has been renamed to INSTALL.git
 2. INSTALL.git has had its list of steps edited so that each step is *one* action.
 3. The file README.bootstrap has been provided as a set of instructions..

I hereby give up any and all copyright claims on this material in exchange for credit given in the source repository.  You may do with these changes what you wish.