[CVS ci] runtime includes for parrot - 1

[Leopold Toetsch]

I've put in a new Configure step that populates runtime/parrot/include 
with various .PASM files containing constant from all over parrot/include.

The procedure to add a constants file is rather simple:
- add the *.h (or *.c) file to config/gen/parrot_include.pl
- surround your #define's or enum with these directives:
 /* &gen_from_{enum,def}(<file.pasm>) [ prefix(<SOME_PREFIX_>) ] \
    [ subst(s/<x>/<y>/flags?) ] */
 ...
  /* &end_gen */
prefix() and subst() are optional, if both are present, the prefix is 
prepended first. The <file.pasm> shouldn't have a path, 
runtime/parrot/include/ is prepended always.

s. include/parrot/*.h for examples

Have fun,
leo