[FT4X] FT4X name tags now allow characters + - / @ and *  Fixes #6605

Hi list, I know that Daniel Clemmesen has offered to fix this bug that I registered. I decided to have a try myself. I hope this isn't treading on anyones' toes.
Regards,
Rob


# HG changeset patch
# User Rob Hunter <robert.edward.hunter@gmail.com>
# Date 1552738796 -3600
#      Sat Mar 16 13:19:56 2019 +0100
# Node ID 778c359144f78758e55bdb31e42f8135b36540e1
# Parent  5c956c3dc1468979d31ff8483a144e0c3676c990
[mq]: mypatch

diff --git a/chirp/drivers/ft4.py b/chirp/drivers/ft4.py
--- a/chirp/drivers/ft4.py
+++ b/chirp/drivers/ft4.py
@@ -531,6 +531,7 @@
 CW_ID_CHARS = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ "
 PASSWD_CHARS = "0123456789"
 CHARSET = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqurtuvwxyz*# "
+CHARSET = CHARSET + "+-/"
 PMSNAMES = ["%s%02d" % (c, i) for i in range(1, 11) for c in ('L', 'U')]