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/database-sqlite3.cpp

@@ -30,7 +30,6 @@ SQLite format specification:
 #include "log.h"
 #include "filesys.h"
 #include "exceptions.h"
-#include "main.h"
 #include "settings.h"
 #include "util/string.h"