pgsql: Make pltcl regression tests safe for Danish locale.

Make pltcl regression tests safe for Danish locale.

Another peculiarity of Danish locale is that it has an unusual idea
of how to sort upper vs. lower case. One of the pltcl test cases has
an issue with that. Now that COLLATE works in all supported branches,
we can just change the test to be locale-independent, and get rid of
the variant expected file that used to support non-C locales.

Branch
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REL9_1_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/f61ecd01e349cc45e9299ba48bba3fb4673fc319

Modified Files
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src/pl/tcl/expected/pltcl_queries.out | 4 +-
src/pl/tcl/expected/pltcl_queries_1.out | 258 --------------------------------
src/pl/tcl/sql/pltcl_queries.sql | 4 +-
3 files changed, 4 insertions(+), 262 deletions(-)