Use centralized cmake version

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

CMakeLists.txt

@@ -9,12 +9,20 @@
 #
 #################################################
 
-project( dbus-1-tqt )
 
+##### set project version ########################
+
+include( TDEVersion )
+cmake_minimum_required( VERSION ${TDE_CMAKE_MINIMUM_VERSION} )
+tde_set_project_version( )
+
+
+##### general package setup #####################
 
-##### cmake setup ###############################
+project( dbus-1-tqt )
 
-cmake_minimum_required( VERSION 3.5 )
+
+##### include essential cmake modules ###########
 
 include( FindPkgConfig )
 include( CheckCXXSourceCompiles )
@@ -23,11 +31,6 @@ include( CheckSymbolExists )
 include( TDEMacros )
 
 
-##### set version number ########################
-
-tde_set_project_version( )
-
-
 ##### optional stuff
 
 option( WITH_ALL_OPTIONS "Enable all optional support" OFF )