SMIMEA support incomplete

[klaus3000]

On master and 4.1 branch. This bugfix will not cause incompatibility after upgrade (in a master-slave setup the slave must be upgraded first) as PDNS also supports the TYPExx type.

--- a/pdns/qtype.hh
+++ b/pdns/qtype.hh
@@ -198,6 +198,7 @@ private:
       qtype_insert("NSEC3", 50);
       qtype_insert("NSEC3PARAM", 51);
       qtype_insert("TLSA", 52);
+      qtype_insert("SMIMEA", 53);
       qtype_insert("RKEY", 57);
       qtype_insert("CDS", 59);
       qtype_insert("CDNSKEY", 60);

PS: Sorry for not make a PR, but my git fork lost control in too many branches ...