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

src/nodeinfo.h

@@ -22,10 +22,10 @@
  */
 
 #ifndef __VIR_NODEINFO_H__
-#define __VIR_NODEINFO_H__
+# define __VIR_NODEINFO_H__
 
-#include "libvirt/libvirt.h"
-#include "capabilities.h"
+# include "libvirt/libvirt.h"
+# include "capabilities.h"
 
 int nodeGetInfo(virConnectPtr conn, virNodeInfoPtr nodeinfo);
 int nodeCapsInitNUMA(virCapsPtr caps);