Cosmetic fixes to SCons buildsystem

- Removed trailing spaces
- Made sure all indentation is done using tabs (fixes #39)
- Potentially fixed an identation issue for openssl check

servers/SCsub

@@ -15,5 +15,3 @@ SConscript('spatial_sound_2d/SCsub');
 lib = env.Library("servers",env.servers_sources)
 
 env.Prepend(LIBS=[lib])
-
-