Include the errno.h file to have the definition of errno.

This commit was SVN r958.

src/tools/laminfo/laminfo.cc

@@ -15,6 +15,7 @@
 #include <unistd.h>
 #include <netdb.h>
 #include <sys/param.h>
+#include <errno.h>
 
 #include "runtime/runtime.h"
 #include "util/output.h"
@@ -222,7 +223,6 @@ const string laminfo::type_lam = "lam";
 const string laminfo::type_base = "base";
 laminfo::type_vector_t laminfo::mca_types;
 
-
 int main(int argc, char *argv[])
 {
   int ret = 0;