Akonadi: fixed backend instantiation

When building modules, the registation code must be part of
the module. Integration testing should always be offered by
the backend. The ifdef is only for the test driver.

src/backends/akonadi/AkonadiSyncSourceRegister.cpp

@@ -335,8 +335,6 @@ SYNCEVOLUTION_TEST_SUITE_REGISTRATION(AkonadiTest);
 
 #endif // ENABLE_UNIT_TESTS
 
-#ifdef ENABLE_INTEGRATION_TESTS
-
 namespace {
 #if 0
 }
@@ -383,7 +381,6 @@ public:
 } memoTest;
 
 }
-#endif // ENABLE_INTEGRATION_TESTS
 
 #endif // ENABLE_AKONADI
 

src/backends/akonadi/akonadisyncsource.cpp

@@ -289,3 +289,7 @@ TrackingSyncSource::InsertItemResult AkonadiMemoSource::insertItem(const std::st
 
 SE_END_CXX
 #endif // ENABLE_AKONADI
+
+#ifdef ENABLE_MODULES
+# include "AkonadiSyncSourceRegister.cpp"
+#endif