Add SDCC, freeware, retargettable, optimizing ANSI C compiler that targets the
Intel 8051, Maxim 80DS390, and Zilog Z80 based MCUs (support for Motorola
68HC08 as well as Microchip PIC16 and PIC18 series is in progress).
Approved by: fjoe (mentor, implicit)
Partially obtained from: Debian (manpages)