- moved definition of expr_result from expr.c to fpd.y
- new header file fpd.h with all the things fpd.l and fpd.y export
- edit_var already calls edit_nothing, so there's no need to call it before
- added rapid entry option for loops, variables, and columns: var = val, ...
git-svn-id: http://svn.openmoko.org/trunk/eda/fped@5459 99fdad57-331a-0410-800a-d7fa5415bdb3