xgettext: Scheme: In language Scheme, handle backslash-newline as specified in R6RS.
Reported by Florent Angly <florent.angly@gmail.com>
at <https://savannah.gnu.org/bugs/?59262>.
* gettext-tools/src/x-scheme.c (read_object): Do R6RS-compliant interpretation
of backslash-newline if follow_guile is false.
* gettext-tools/tests/xgettext-scheme-7: New file.
* gettext-tools/tests/xgettext-scheme-8: New file.
* gettext-tools/tests/Makefile.am (TESTS): Add them.
