In this commit:
* Added handling of the DRAFT variable to the common makefile;
* Removed verbose and debugging flags from the call to FOP in the command makefile;
* Changed the FOP stylesheet to hide remarks unless show.comments is set to 1 (via the DRAFT variable);
* Updated the titlepage to handle remarks in the preface;
* Added text RE the layout object;
* Defined the layout object, sort of;
* Removed all but the floating-point and complex floating-point function and type definitions.