mke2fs: remove quota docs if not configured in

If quota isn't turned on with --enable-quota, then comment
quota documentation out of the mke2fs manpage.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/configure.in b/configure.in
index fc65b03..f9cfd53 100644
--- a/configure.in
+++ b/configure.in
@@ -565,6 +565,8 @@
 dnl
 dnl handle --enable-quota
 dnl
+QUOTA_MAN_COMMENT='.\"'
+AC_SUBST(QUOTA_MAN_COMMENT)
 PKG_PROG_PKG_CONFIG
 AH_TEMPLATE([CONFIG_QUOTA], [Define to 1 to enable quota support])
 AC_ARG_ENABLE([quota],
@@ -575,6 +577,8 @@
 else
 	AC_DEFINE(CONFIG_QUOTA, 1)
 	AC_MSG_RESULT([Enabling quota support])
+	QUOTA_MAN_COMMENT=""
+	AC_SUBST(QUOTA_MAN_COMMENT)
 fi
 ,
 AC_MSG_RESULT([Disabling quota support by default])