New methods to handle VARCHAR strings and CHAR's which are not
using a binary collation.
Indentation fixes
Now strings are run through strnxfrm before they are processed
by the partition function
We do not allow collations where strnxfrm expands the string since
we want the resulting string to fit in the same value range as
the original.
Bug # 17894 - Comparison with "less than" operator fails with range partition
The problem here was that on queries such as < 3, the range given is NULL < n < 3.
The null part works correctly where the null value is stored in rec[0] and the
field is marked as being null. However, when the 3 is processed, the 3 is places
on rec[0] but the null flag is left uncleared.
partition_range.result:
Results block for bug #17894
partition_range.test:
Test block for bug #17894
partition_list.result:
Results block for bug #17173
partition_list.test:
Test block for bug #17173
opt_range.cc:
call set_notnull to clear any null flag that may have been set
