[fpc-pascal] compile DPR files

[L]

I think fpc compiler should compile .dpr files without having to type 
the extension.. me is lazy..

fpc prog

this compiles prog.pp but doesn't do prog.dpr ;-)

What do we think?

I can supply patch and work on it if you think it is useful.

p.s. I haven't checked, does fpc automatically compile .LPR files 
without having to type extension?

One more thought.. some other braindamaged file extension 
borland/codegear added recently... I forget what it is.. dpsj or some 
hideous crap.