Adding rules for building blackhole, also updating test case.

configure.in:
  Adding logic to run blackhole configure option.
mysql-test/r/blackhole.result:
  Correction this, but I think I need to see why the warning is being generated in the first place.

config/ac-macros/ha_blackhole.m4

+dnl ---------------------------------------------------------------------------
+dnl Macro: MYSQL_CHECK_BLACKHOLEDB
+dnl Sets HAVE_BLACKHOLE_DB if --with-blackhole-storage-engine is used
+dnl ---------------------------------------------------------------------------
+AC_DEFUN([MYSQL_CHECK_BLACKHOLEDB], [
+  AC_ARG_WITH([blackhole-storage-engine],
+              [
+  --with-blackhole-storage-engine
+                          Enable the Blackhole Storage Engine],
+              [blackholedb="$withval"],
+              [blackholedb=no])
+  AC_MSG_CHECKING([for blackhole storage engine])
+
+  case "$blackholedb" in
+    yes )
+      AC_DEFINE([HAVE_BLACKHOLE_DB], [1], [Builds Blackhole Storage Engine])
+      AC_MSG_RESULT([yes])
+      [blackholedb=yes]
+      ;;
+    * )
+      AC_MSG_RESULT([no])
+      [blackholedb=no]
+      ;;
+  esac
+
+])
+dnl ---------------------------------------------------------------------------
+dnl END OF MYSQL_CHECK_BLACKHOLE SECTION
+dnl ---------------------------------------------------------------------------

configure.in

@@ -37,6 +37,7 @@ sinclude(config/ac-macros/character_sets.m4)
 sinclude(config/ac-macros/compiler_flag.m4)
 sinclude(config/ac-macros/ha_archive.m4)
 sinclude(config/ac-macros/ha_berkeley.m4)
+sinclude(config/ac-macros/ha_blackhole.m4)
 sinclude(config/ac-macros/ha_example.m4)
 sinclude(config/ac-macros/ha_federated.m4)
 sinclude(config/ac-macros/ha_innodb.m4)

mysql-test/r/blackhole.result

@@ -73,7 +73,7 @@ explain extended select * from t1 where MATCH(a,b) AGAINST ("collections");
 id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 1	SIMPLE	t1	fulltext	a	a	0		1	Using where
 Warnings:
-Note	1003	select test.t1.a AS `a`,test.t1.b AS `b` from test.t1 where (match test.t1.a,test.t1.b against (_latin1'collections'))
+Note	1003	select `test`.`t1`.`a` AS `a`,`test`.`t1`.`b` AS `b` from `test`.`t1` where (match `test`.`t1`.`a`,`test`.`t1`.`b` against (_latin1'collections'))
 select * from t1 where MATCH(a,b) AGAINST ("indexes");
 a	b
 Full-text indexes	are called collections