The host "samba-amd64" on the build farm running openbsd 4.8 broke.
Taking over the additional spellings of autoconf and autoheader from
the source3/autogen.sh script should fix it.
## insert all possible names (only works with
## autoconf 2.x
-TESTAUTOHEADER="autoheader autoheader-2.53 autoheader2.50"
-TESTAUTOCONF="autoconf autoconf-2.53 autoconf2.50"
+TESTAUTOHEADER="autoheader autoheader-2.53 autoheader2.50 autoheader259 autoheader253"
+TESTAUTOCONF="autoconf autoconf-2.53 autoconf2.50 autoconf259 autoconf253"
+
AUTOHEADERFOUND="0"
AUTOCONFFOUND="0"