pothos-library: singleton for RemoteSyslogListener

also protect other logger methods with a mutex lock
pothos-library: created RemoteSyslogListenerCloser for startSyslogListener

the poco RemoteSyslogListener doesnt call close on itself in the destructor
pothos-library: always reinstall buffer manager for new flows
pothos-library: log stdio forward output on newline
pothos-library: fix PothosUtil to use correct doc sources
pothos-library: fix BufferAccumulator pop for inPoolBuffer
pothos-library: began work on a general interface for templated method calls
pothos-library: use call interface to implement callable
pothos-library: block inherits from the call interface
pothos: replace emit signal args with call interface
pothos-library: reimplement the object container factory specialization
pothos: change to call interface to support meta arguments
pothos-library: msvc fix -- cant lock logger thread in init
pothos-library: move call interface into base class connectable
pothos-library: moved call registry into connectable base class
pothos-library: moved call registry to callable directory
pothos-library: made opaqueCallMethod a const method
pothos-library: fix PCH install prefix
Merge branch 'call_interface'
pothos-library: output signal port is ready w/o elems