o.c.application.sdds.server: Replaced library xmlrpc with new version
that contains the patch for tagging string values. Server extensions may
now be enabled by preference settings.
o.c.application.xmlrpc/sdds.server: Changed value type from float to
double. Added remote command Methods to SDDS server.
Merge branch 'command-server'

Conflicts:
	applications/plugins/org.csstudio.application.xmlrpc.server/.classpath