Bug in byteaout code in all PostgreSQL versions

Hello!

bytea-test.cxx -- contains detailed description of the bug and test
plan and code.

varlena.c.diff -- patch for PostgreSQL 7.5devel
src/backend/utils/adt/varlena.c#byteaout
fe-exec.c.diff -- patch (optional) for PostgreSQL 7.5devel
src/interface/libpq/fe-exec.c#PQescapeBytea

test.data -- contains test data :-))

--
Sergey N. Yatskevich <syatskevich@n21lab.gosniias.msk.ru>
GosNIIAS