Java based Smith chart program. Performs single-frequency and sweep charting
with both Smitch charts and SWR/PWR curves. Does drag-and-drop schematic entry
with direct entry of component values as well as "drag tuning". Can import
load parameters directly from the following:

• EZNEC (and EZNEC GAM files)
• miniVNA and miniVNApro
• AIM4170
• CocoaNEC
• Rig Expert ".aaplot" files
• Touchstone S1P ".s1p" files (shunt and series)

Reviewed by: db, skreuzer
Approved by: db, skreuzer (mentors)
Differential Revision: https://phabric.freebsd.org/D311