Fix build with GCC 4.4

Lubomir Rintel <lkundrak@v3.sk>

diff -up Healpix_2.11c/src/cxx/alice/testMollweideSkyMap.cc.gcc44 Healpix_2.11c/src/cxx/alice/testMollweideSkyMap.cc
--- Healpix_2.11c/src/cxx/alice/testMollweideSkyMap.cc.gcc44	2009-04-04 14:57:00.959422841 +0200
+++ Healpix_2.11c/src/cxx/alice/testMollweideSkyMap.cc	2009-04-04 14:57:07.608305831 +0200
@@ -1,3 +1,4 @@
+#include <cstdio>
 #include <iostream>
 #include <assert.h>
 #include <math.h>
diff -up Healpix_2.11c/src/cxx/alice/testOrthogonalSkyMap.cc.gcc44 Healpix_2.11c/src/cxx/alice/testOrthogonalSkyMap.cc
--- Healpix_2.11c/src/cxx/alice/testOrthogonalSkyMap.cc.gcc44	2009-04-04 14:57:38.576299113 +0200
+++ Healpix_2.11c/src/cxx/alice/testOrthogonalSkyMap.cc	2009-04-04 14:57:44.702423754 +0200
@@ -1,3 +1,4 @@
+#include <cstdio>
 #include <iostream>
 #include <assert.h>
 #include <math.h>