pgsql: printf("%lf") is not portable, so omit the "l".

printf("%lf") is not portable, so omit the "l".

The "l" (ell) width spec means something in the corresponding scanf usage,
but not here. While modern POSIX says that applying "l" to "f" and other
floating format specs is a no-op, SUSv2 says it's undefined. Buildfarm
experience says that some old compilers emit warnings about it, and at
least one old stdio implementation (mingw's "ANSI" option) actually
produces wrong answers and/or crashes.

Discussion: https://postgr.es/m/21670.1526769114@sss.pgh.pa.us
Discussion: https://postgr.es/m/c085e1da-0d64-1c15-242d-c921f32e0d5c@dunslane.net

Branch
------
REL9_4_STABLE

Details
-------
https://git.postgresql.org/pg/commitdiff/e52cabff7054005d2f7157c236d996dcd79baf5c

Modified Files
--------------
doc/src/sgml/ecpg.sgml | 2 +-
src/interfaces/ecpg/test/compat_informix/sqlda.pgc | 2 +-
src/interfaces/ecpg/test/expected/compat_informix-sqlda.c | 2 +-
src/interfaces/ecpg/test/expected/preproc-outofscope.c | 2 +-
src/interfaces/ecpg/test/expected/sql-sqlda.c | 2 +-
src/interfaces/ecpg/test/preproc/outofscope.pgc | 2 +-
src/interfaces/ecpg/test/sql/sqlda.pgc | 2 +-
7 files changed, 7 insertions(+), 7 deletions(-)