Join license header with historical commentrs

Join the license header with historical comments using a separator so IDEs can correctly parse the initial header.

Also use .gitattributes to ensure all files are LF.

linux/lnxcon_raw.cpp

@@ -14,9 +14,9 @@
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
 
-/*
+--- HISTORICAL COMMENTS FOLLOW ---
+
  * $Logfile: /DescentIII/Main/linux/lnxcon_raw.cpp $
  * $Revision: 1.2 $
  * $Date: 2004/02/25 00:04:06 $