pgsql: ecpglib needs to link with libintl if it's in use.

Log Message:
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ecpglib needs to link with libintl if it's in use.
Per buildfarm results.

Modified Files:
--------------
pgsql/src/interfaces/ecpg/ecpglib:
Makefile (r1.59 -> r1.60)
(http://anoncvs.postgresql.org/cvsweb.cgi/pgsql/src/interfaces/ecpg/ecpglib/Makefile?r1=1.59&r2=1.60)