Possible fix for Bug 545219



I have a possible solution for this bug wherein configure doesn't
accept full paths for the Lisp executables.

Sorry, no patch yet, but here is a list of the things to be done:

1.  Modify configure.in so it produces warnings instead of errors when
    it can't find the given full path in $PATH.
2.  Modify src/Makefile.am to set CMUCL, CLISP, and GCL to CMUCL_NAME,
    CLISP_NAME, GCL_NAME, respectively before running maxima-run-lisp
3.  Modify src/maxima.in so that it knows the values of CMUCL_NAME,
    CLISP_NAME, GCL_NAME, so that it sets the appropriate envvars as
    in 2 above before calling maxima-run-lisp.

I've implemented 1 and 2 above and maxima is built with the specified
path.  

I haven't done 3 yet.  Need to dig a little to figure out how to get
the necessary vars into src/maxima.

This will be good for me because my gcl 2.5.0 isn't in my path right
now.

Ray