test_app_server: use libstackandtile.

We build a static lib for it, so we may as well use it.

src/servers/app/stackandtile/Jamfile

@@ -4,6 +4,8 @@ UseLibraryHeaders agg lp_solve linprog ;
 UsePrivateHeaders app graphics interface shared kernel ;
 UseBuildFeatureHeaders freetype ;
 
+SetSubDirSupportedPlatforms libbe_test ;
+
 UseHeaders [ FDirName $(HAIKU_TOP) src servers app ] ;
 UseHeaders [ FDirName $(HAIKU_TOP) src servers app decorator ] ;
 UseHeaders [ FDirName $(HAIKU_TOP) src servers app font ] ;

src/tests/servers/app/Jamfile

@@ -47,7 +47,6 @@ SEARCH_SOURCE += [ FDirName $(appServerDir) decorator ] ;
 SEARCH_SOURCE += [ FDirName $(appServerDir) drawing ] ;
 SEARCH_SOURCE += [ FDirName $(appServerDir) drawing Painter ] ;
 SEARCH_SOURCE += [ FDirName $(appServerDir) font ] ;
-SEARCH_SOURCE += [ FDirName $(appServerDir) stackandtile ] ;
 
 SharedLibrary libhwinterface.so :
 	BBitmapBuffer.cpp
@@ -168,15 +167,9 @@ SharedLibrary libtestappserver.so :
 	Workspace.cpp
 	WorkspacesView.cpp
 
-	# stack and tile
-	SATDecorator.cpp
-	SATGroup.cpp
-	SATWindow.cpp
-	StackAndTile.cpp
-	Stacking.cpp
-	Tiling.cpp
 	# libraries
 	: be libpainter.a libagg.a liblinprog.a libtextencoding.so libshared.a
+	libstackandtile.a
 	[ BuildFeatureAttribute freetype : library ]
 ;