misc: use g_regex_match() for simplicity
This CL converts a few g_regex_match_full() expressions to their equivalent g_regex_match() in order to simplify the code, i.e.
g_regex_match_full (regex, str, strlen (str), 0, 0, &match_info, NULL)
is equivalent to:
g_regex_match_full (regex, str, -1, 0, 0, &match_info, NULL)
or simply:
g_regex_match (regex, str, 0, &match_info)