Add support for Fedora's z3 package.

Fedora installs the z3 headers in /usr/include/z3, which was not being
detected by CMake.

Signed-off-by: dehnert <dehnert@cs.rwth-aachen.de>

resources/cmake/find_modules/FindZ3.cmake

@@ -10,7 +10,7 @@
 # find include dir by searching for a concrete file, which definitely must be in it
 find_path(Z3_INCLUDE_DIR 
             NAMES z3++.h 
-            PATHS ENV PATH INCLUDE "/usr/local/include/z3/" "${Z3_ROOT}/include"
+            PATHS ENV PATH INCLUDE "/usr/include/z3" "/usr/local/include/z3/" "${Z3_ROOT}/include"
          )
 
 # find library