build: consistently indent preprocessor directives

* global: patch created by running:
for f in $(git ls-files '*.[ch]') ; do
    cppi $f > $f.t && mv $f.t $f
done

daemon/stream.h

@@ -22,9 +22,9 @@
 
 
 #ifndef __LIBVIRTD_STREAM_H__
-#define __LIBVIRTD_STREAM_H__
+# define __LIBVIRTD_STREAM_H__
 
-#include "libvirtd.h"
+# include "libvirtd.h"