Wide character string copy subroutines

The following multicultural support subroutines copy wide character strings:

wcscpy

Copies a wide character string to another wide character string.

wcsncpy

Copies a specific number of characters from a wide character string to another wide character string.

wcscat

Appends a wide character string to another wide character string.

wcsncat

Appends a specific number of characters from a wide character string to another wide character string.