changes:
-Added deg, rad, pol and rect commands
-Added engineer notation
-New function "mod"=remainder introduced
-minor cleanup
-Locale determines the decimal separator point or comma
-Compiles against gtk2
pkgsrc change: DESTDIR support
adds several constants found in science and engineering:
- 'k' Boltzmanns constnat
- 'q' Electron charge
- 'e0' Free space permitivity
- 'mu0'Free space permeability
- 'c' Free space speed of light.