Update Szarp build-deps for new database format (sz4)

+ added libzmq-dev, libcppunit-dev, protobuf-compiler to build
dependencies.
File locking wrapper (for fcntl()) and locking files in sz4

+ unified file locking - use routines from
  'libSzarp2/include/sz4/filelock.h'.
+ added locking in SzbParamMonitor unit tests.
+ fixed locking in code loading sz4 database files (different types of
locks don't work together).