Defines the configuration files to be used by the runtime system.
The FGLPROFILE environment variable defines a list of configuration files to be used by the runtime system.
If FGLPROFILE is not set, the runtime system reads entries from the default configuration file located in FGLDIR/etc/fglprofile.
FGLPROFILE can define one unique configuration file, or a list of files to be loaded sequentially.
FGLPROFILE must contain a list of file paths, separated by the operating system specific path separator. The path separator is ":" on UNIX™ platforms and ";" on Windows™ platforms.