Merge pull request #274 from mwennrich/fix-FreeBSD-check_swap

fix configure.ac for FreeBSD SWAPFORMAT

configure.ac

@@ -1602,7 +1602,7 @@ then
 
 	if [$PATH_TO_SWAPINFO -k 2>/dev/null | egrep -i "^Device +1K-blocks +Used +Avail" >/dev/null]
 	then
-		ac_cv_swap_format=["%*s %f %*d %f"]
+		ac_cv_swap_format=["%*s %lf %*d %lf"]
 		ac_cv_swap_conv=1024
 		AC_MSG_RESULT([using FreeBSD format swapinfo])
 	fi