The linux shared library system allows a shared library to have an entry point for running as normal application. We can use that to print version information on the terminal if you run our plugin shared libraries on Linux:
cs@ubuntu10-32:~/Desktop/MeinProgramm Libs$ ./MBS_SQL_Plugin_18645.so
MBS Plugin, version 15.1, built May 30 2015
So if you execute the .so library files in future, they should tell you the version number.
PS: For Mac and Windows you see details in Info dialog already.