heirloom-mailx: new package

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
diff --git a/package/Config.in b/package/Config.in
index 34570be..7d145c3 100644
--- a/package/Config.in
+++ b/package/Config.in
@@ -460,6 +460,7 @@
 source "package/dropbear/Config.in"
 source "package/ebtables/Config.in"
 source "package/ethtool/Config.in"
+source "package/heirloom-mailx/Config.in"
 if BR2_PACKAGE_BUSYBOX_SHOW_OTHERS
 source "package/hiawatha/Config.in"
 endif