of ::dlf_init() to the exception thrown by:

castor::dlf::dlf_init(const char* facilityName, castor::dlf::Message messages[])

A nice explanatory message was being consructed when the facility name exceeded
21 characters in length, but the message was not added to the exception, so I
only got a "Unable to initialize DLF" with no further explanation when I tried
to initialise DLF with a crazy long name.

Use ::dlf_isinitialized instead of our own version so that it works also when DLF is initialized from C

Improved logging into DLF. You can now declare new messages even before DLF was initialized. Very useful for libraries loaded before the main is called \!

C++ interface to DLF. This is supposed to replace the current logging facility without loosing the possibility to give objects to the interface.