pgsql: Fix ecpg -? option on Windows, add -V alias for --version.

pgsql: Fix ecpg -? option on Windows, add -V alias for --version.

Fix ecpg -? option on Windows, add -V alias for --version.

This makes the -? and -V options work consistently with other binaries.
--help and --version are now only recognized as the first option, i.e.
"ecpg --foobar --help" no longer prints the help, but that's consistent
with most of our other binaries, too.

Backpatch to all supported versions.

Haribabu Kommi

Discussion: 

Branch
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REL9_4_STABLE

Details
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http://git.postgresql.org/pg/commitdiff/d48e10a6859e2df81a43b1f830d42fa11c186a6f

Modified Files
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src/interfaces/ecpg/preproc/ecpg.c | 47 +++++++++++++++-----------------------
1 file changed, 18 insertions(+), 29 deletions(-)