The reason is that a plugin may include its private version of some
code that opencpn also has in its source. Without -Bsymbolic the plugin
may use the objects from opencpn instead of its version, and which do
not match the includes it was compiled with, and bad things happens.
bump PKGREVISIONs
There are more recent sources but they don't work with the stable version
of opencpn.
This plugin Shows the OpenCPN streams from GPS and AIS ports that propagate
through the plugin interface, NMEA Events and messages flowing
through the plugin API.
