patch 9.2.0132: tests: Test_recover_corrupted_swap_file1 fails on be systems

patch 9.2.0132: tests: Test_recover_corrupted_swap_file1 fails on be systems

Problem:  tests: Test_recover_corrupted_swap_file1 fails on big-ending
          systems (after v9.2.0077)
Solution: Skip the test on big-endian systems (James McCoy)

The POC files were generated on 64-bit little-endian systems and
therefore are not portable to any other system type.

Extract the 64-bit / endianness detection from
Test_recover_corrupted_swap_file() into a SetUp() function and use that
data to determine if the test should be run.

closes: #19620

Signed-off-by: James McCoy <jamessan@debian.org>
Signed-off-by: Christian Brabandt <cb@256bit.org>