kernel32/tests: Fix atom tests on Win7.

dlls/kernel32/tests/Makefile.in

@@ -3,7 +3,7 @@ TOPOBJDIR = ../../..
 SRCDIR    = @srcdir@
 VPATH     = @srcdir@
 TESTDLL   = kernel32.dll
-IMPORTS   = advapi32 kernel32
+IMPORTS   = user32 advapi32 kernel32
 
 CTESTS = \
 	actctx.c \

dlls/kernel32/tests/atom.c

@@ -619,6 +619,10 @@ static void test_local_error_handling(void)
 
 START_TEST(atom)
 {
+    /* Global atom table seems to be available to GUI apps only in
+       Win7, so let's turn this app into a GUI app */
+    GetDesktopWindow();
+
     test_add_atom();
     test_get_atom_name();
     test_error_handling();