The source project of this merge request has been removed.
gstrfuncs.c: add const argument to g_strjoinv
gstrfuncs.c: add const argument to g_strjoinv
g_strjoinv does not do anything to **str_array, so it can be safely used as a const char **. In addition, this allows a user to pass a const char ** to g_strjoinv without having to cast a const char ** to char ** to prevent a compiler warning.