Added symbol for PIC16F506.
Added footprint generation for MS-012-AB (SOIC-14, narrow 3.90mm body).
Added box-header-with-notch.pl (generates box header footprint) and Rect.pm (simple logical rectangle manipulation). basic-footprint-gen.sh now generates footprints for the entire Sullins SBH11-PBPC-Dxx-ST-xx series.
(gEDA has plenty of header footprints already, but one with a nice silk to block out the space was difficult to find.)
Box headers generated by the new script.