Link to X11 on c::b project file for tests (got changed recently in other project files).

git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@4811 dfc29bdd-3216-0410-991c-e03cc46cb475

tests/tests.cbp

@@ -45,6 +45,7 @@
 				<Linker>
 					<Add library="Xxf86vm" />
 					<Add library="GL" />
+					<Add library="X11" />
 					<Add directory="../lib/Linux/" />
 				</Linker>
 			</Target>
@@ -62,6 +63,7 @@
 				<Linker>
 					<Add library="Xxf86vm" />
 					<Add library="GL" />
+					<Add library="X11" />
 					<Add directory="../lib/Linux/" />
 				</Linker>
 			</Target>