Defers the loading of fonts in chart.lisp until runtime, and adds a file zzinit.lisp
which contains an initialize! function as well as a confirmation (with warning) if
any of the *afm-files-directories* do not exist. This confirmation is invoked at the
toplevel so you will see a warning during compile and/or load if the afm directories
are not existing, with suggestion to run the initialize! function at runtime before
trying to use cl-pdf functions. [Thanks to Dave Cooper]