Move globals from main.cpp to more sane locations

Move debug streams to log.cpp|h

Move GUI-related globals to clientlauncher

Move g_settings and g_settings_path to settings.cpp|h

Move g_menuclouds to clouds.cpp|h

Move g_profiler to profiler.cpp|h

src/profiler.h

@@ -27,11 +27,15 @@ with this program; if not, write to the Free Software Foundation, Inc.,
 #include "jthread/jmutex.h"
 #include "jthread/jmutexautolock.h"
 #include "util/timetaker.h"
-#include "util/numeric.h" // paging()
-#include "debug.h" // assert()
+#include "util/numeric.h"      // paging()
+#include "debug.h"             // assert()
 
 #define MAX_PROFILER_TEXT_ROWS 20
 
+// Global profiler
+class Profiler;
+extern Profiler *g_profiler;
+
 /*
 	Time profiler
 */