sysconf.c patch

I don't know if sysinfo() is available on all ARCHs.  Of any case
ngetty uses sysinfo and builds on archlinux, debian, ubuntu using it.


--- sysconf_orig.c	Wed May 20 11:29:17 2009
+++ sysconf.c	Wed May 20 11:20:42 2009
@@ -6,6 +6,17 @@
 
 extern int __sc_nr_cpus();
 
+#if 1
+#include <sys/sysinfo.h>
+
+static long physpages() {
+  struct sysinfo si;
+  if (sysinfo(&si)) return -1;
+  /* si.totalram is unsigned long; why return is long? */
+  return si.totalram;
+}
+
+#else
 static long physpages() {
   int fd=open("/proc/meminfo",O_RDONLY);
   char buf[2048];
@@ -28,6 +39,7 @@
   close(fd);
   return l*1024;
 }
+#endif
 
 long sysconf(int name)
 {