BUG# 17393: Partitions: Wrong error message when assigning too many subpartitions

We changed the error message to more clearly reflect the fact
that we are counting parts and subparts

mysql-test/r/partition_mgm_err.result

@@ -91,7 +91,7 @@ PARTITION BY KEY (a)
 ALTER TABLE t1 ADD PARTITION PARTITIONS 0;
 ERROR HY000: At least one partition must be added
 ALTER TABLE t1 ADD PARTITION PARTITIONS 1024;
-ERROR HY000: Too many partitions were defined
+ERROR HY000: Too many partitions (including subpartitions) were defined
 ALTER TABLE t1 DROP PARTITION x0;
 ERROR HY000: DROP PARTITION can only be used on RANGE/LIST partitions
 ALTER TABLE t1 COALESCE PARTITION 1;

sql/share/errmsg.txt

@@ -5660,8 +5660,8 @@ ER_PARTITION_NOT_DEFINED_ERROR
         eng "For the partitioned engine it is necessary to define all %-.64s"
         swe "Fr partitioneringsmotorn s r det ndvndigt att definiera alla %-.64s"
 ER_TOO_MANY_PARTITIONS_ERROR
-        eng "Too many partitions were defined"
-        swe "Fr mnga partitioner definierades"
+        eng "Too many partitions (including subpartitions) were defined"
+        swe "Fr mnga partitioner (inkluderande subpartitioner) definierades"
 ER_SUBPARTITION_ERROR
         eng "It is only possible to mix RANGE/LIST partitioning with HASH/KEY partitioning for subpartitioning"
         swe "Det r endast mjligt att blanda RANGE/LIST partitionering med HASH/KEY partitionering fr subpartitionering"