Russian translation updates for 7.5

Hello,

Attached are translation updates for 7.5. The components
are listed below. Please install whenever possible.

$ msgfmt -cvf initdb-ru.po
60 translated messages, 10 untranslated messages.
$ msgfmt -cvf psql-ru.po
465 translated messages.
$ msgfmt -cvf pgscripts-ru.po
112 translated messages.
$ msgfmt -cvf pg_dump-ru.po
334 translated messages.

Also, please don't forget about the backend translation
updates posted on May 16.

Thanks,

--
Serguei A. Mokhov