Fixed gcc 4.8 warnings

Disabled gcc warnings that are tripped by Eigen.

Removed signal code that is not needed in Linux port and was
causing gcc warnings.

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

src/systemcmds/param/param.c

@@ -182,7 +182,7 @@ static int
 do_save(const char *param_file_name)
 {
 	/* create the file */
-	int fd = open(param_file_name, O_WRONLY | O_CREAT);
+	int fd = open(param_file_name, O_WRONLY | O_CREAT, 0x777);
 
 	if (fd < 0) {
 		warn("opening '%s' failed", param_file_name);