Log Message:
-----------
Avoid using text_to_cstring() in levenshtein functions.
Operating directly on the underlying varlena saves palloc and memcpy
overhead, which testing shows to be significant.
Extracted from a larger patch by Alexander Korotkov.
Modified Files:
--------------
pgsql/contrib/fuzzystrmatch:
fuzzystrmatch.c (r1.32 -> r1.33)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/contrib/fuzzystrmatch/fuzzystrmatch.c?r1=1.32&r2=1.33)