[plt-scheme] Literal '+inf.0' problem with compile through C.

I realize that compilation through C is considered "old", but it seems
still potentially useful for non-jit targets.  The following piece of
code generates an error.

   inf.ss:
     #lang scheme
     
     (display +inf.0)
     (newline)

   $ mzc --auto-dir -e inf.ss
   Warning: compilation to C is usually less effective for performance
            than relying on the bytecode just-in-time compiler.
   $ mzscheme inf.ss 
   #f::0: compile: bad syntax; literal data is not allowed, because no #%datum syntax transformer is bound in: +inf.0
   
    === context ===
   standard-module-name-resolver
   
The other -inf.0 and +nan.0 constants produce similar errors.
David