[RFA/testcase] test printing wchar_t characters and strings

[Tom Tromey]

>>>>> "Joel" == Joel Brobecker <brobecker@adacore.com> writes:

Joel> gdb/testsuite/ChangeLog:
Joel>         * gdb.base/wchar.c, gdb.base/wchar.exp: New testcases.
Joel> Tested on x86_64-linux.  OK to commit?

This looks good to me.
Thanks for writing this.

Tom