On success, snprintf () returns the number of bytes copied + 1 for '\0'.
See "http://www.cplusplus.com/reference/cstdio/sprintf/"

This is needed for now, as we can have parameters that are less
the size of the structure, such as AFC Diagnostics functions.

This is necessary for applications that choose to directly
manipulate the BPM protocol and not use the libbpmclient
functions.

Some SMIO header files are in a non-standard location for the
BPM server Makfile (not in include/ or libs/include/ folders).
For this we copy the SMIO code header files for the expected
location prior to executing gcc or other makefile command.

The current implementation of the devio_print_info () only works
for PCIe and other MMAP'able devices, not ethernet ones.

This references github issue #98.

This function modify the passed string. So, we need to copy it
over first.

This is necessary, as we want to have the endpoint specified
in terms of the board slot number and not in terms of /dev/fpgaXXX.

This fixes #97 github issue.

Sending the $TERM message multiple time is unnecessary now.
We used to do that before properly shutting down the SMIOs.

The default is to shrink the DDR size to 2^28 bytes.

This is a temporary fix to github issue #39.

This was not needed, just the SAMPLE_SIZE and CHANNEL_NUM
of each channel

RFC located in http://rfc.zeromq.org/spec:21

CLASS RFC locate in http://rfc.zeromq.org/spec:21

The subsystem's header files now lives under include/
directory

We don't need them anymore, as all of the header files
lives on include/ or are private/local header files.

Now, we reference the header files from the current directory
only or from include/

1) This converts all of our public classes into opaque pointers
and add accessor methods to "blindly" convert direct access
into accessor access. This follows more closely the CLASS RFC,
located in http://rfc.zeromq.org/spec:21.

2) All of the public headers are located in include/

3) Added versioning software number in bpm_server_classes.h

This fixes #76 github issue.
This fixes #89 github issue.