Fix CREATE_YARPSCOPE option on windows

FindGtkMM reports the wrong version on windows, since the check was
for a problem strictly related to debian etch, for now we do this check
only on UNIX.
But FindGtkMM should definitely be fixed.
[yarpscope]: just a couple of warnings corrected
prototype of runtime loading of carrier plugins on receiver side
fix missing ACE_OS namespace
add per-carrier config files for fingerprinting/magic
update election type
start enumerating fingerprint files
Fixed connection on remote_controlboard to allow local YARP_PORT_PREFIX; removed obsolete FindBoost.cmake file
Update download page
Cleanup
Cleanup
Show YARP_VERSION_TWEAK in version
[Cleanup] Use option instead of set
Make dtor virtual
Merge trunk up to 9676
Merge trunk up to 9682