pgsql: Make some ecpg test cases more robust against unexpectederrors

Make some ecpg test cases more robust against unexpected errors that happen
during development. Test cases themselves should not hang or segfault.

Branch
------
master

Details
-------
https://git.postgresql.org/pg/commitdiff/e2f731cdba9b7a79cddc64325990a8f51818877b

Modified Files
--------------
.../ecpg/test/compat_informix/test_informix.pgc    |   1 -
.../ecpg/test/compat_informix/test_informix2.pgc   |   4 +-
.../ecpg/test/compat_oracle/char_array.pgc         |   2 +-
.../test/expected/compat_informix-test_informix.c  |  33 +++--
.../expected/compat_informix-test_informix.stderr  |  42 +++---
.../test/expected/compat_informix-test_informix2.c |  84 ++++++-----
.../expected/compat_informix-test_informix2.stderr |  58 ++++----
.../ecpg/test/expected/compat_oracle-char_array.c  |  30 ++--
.../ecpg/test/expected/preproc-outofscope.c        |  61 ++++----
.../ecpg/test/expected/preproc-outofscope.stderr   | 102 +++++++-------
.../test/expected/preproc-whenever_do_continue.c   |  16 +--
src/interfaces/ecpg/test/expected/sql-binary.c     | 156 +++++++++++----------
.../ecpg/test/expected/sql-binary.stderr           |  96 ++++++-------
src/interfaces/ecpg/test/expected/sql-fetch.c      |  69 ++++-----
src/interfaces/ecpg/test/expected/sql-fetch.stderr |  28 ++--
src/interfaces/ecpg/test/expected/sql-quote.c      |  32 ++---
src/interfaces/ecpg/test/preproc/outofscope.pgc    |  11 --
.../ecpg/test/preproc/whenever_do_continue.pgc     |   2 +-
src/interfaces/ecpg/test/sql/binary.pgc            |  56 ++------
src/interfaces/ecpg/test/sql/fetch.pgc             |  10 +-
src/interfaces/ecpg/test/sql/quote.pgc             |   2 +-
21 files changed, 408 insertions(+), 487 deletions(-)