btrfs-progs: move the check_argc_* functions into utils.c

To let the independent tools(e.g. btrfs-image, btrfs-convert, etc.)
share the convenience of check_argc_* functions, just move it into
utils.c.
Also add a new function "set_argv0" to set the correct tool name:
	*btrfs-image*: too few arguments

The original btrfs* tools work as before.

Signed-off-by: Gui Hecheng <guihc.fnst@cn.fujitsu.com>
[moved argv0 and check_argc to utils.*]
Signed-off-by: David Sterba <dsterba@suse.cz>

1 files changed, 1 insertions, 0 deletions

diff --git a/help.c b/help.c
index 09dc706a..fab942b4 100644
--- a/help.c
+++ b/help.c
@@ -19,6 +19,7 @@
 #include <string.h>
 
 #include "commands.h"
+#include "utils.h"
 
 static char argv0_buf[ARGV0_BUF_SIZE];