WIP: PCB Impedance Calculator.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Include the PIC target.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Keep GTK stuff together.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Added more code.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Added and changed more code.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Changed comments.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Updated the Microstrip documentation.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Updated the documentation of the MIC dialog.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Minor corrections.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Added the Symmetric Stripline impedance calculation function.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Added formulas for elleptic integrals.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Added formulas in the documentation for embedded microstrip calculation.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Changed documentation for GTK UI callback functions.

Signed-off-by: bert <bert.timmerman@xs4all.nl>