The use of an array of zero length at the end of a structure needs to
be careful to use RTEMS_ZERO_LENGTH_ARRAY since the accepted syntax
varies across C language versions.
This patch changes the license to BSD-2 for all source files where the
copyright is held by Aeroflex Gaisler, Cobham Gaisler, or Gaisler Research.
Some files also includes copyright right statements from OAR and/or
embedded Brains in addition to Gaisler.
Updates #3053.
