Added CON-SIL-254P-7.sym.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Added CON-SIL-254P-4.sym.

Signed-off-by: bert <bert.timmerman@xs4all.nl>
Added CON-SIL-254P-5.sym.

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