Appends a copy of a specified string to the end of another string.
#include <unilib.h> unicode_t *unicat ( unicode_t *tgt, const unicode_t *src);
(OUT) Points to the original string.
(IN) Points to the string to be appended.
Returns a pointer to the concatenated string.
The unicat function corresponds to the strcat function.
The length of the resulting string is:
unilen (tgt) + unilen (src)