tcsh: update to 6.22.02 (#8339)

- switch to GitHub, using github portgroup

shells/tcsh/Portfile

@@ -1,32 +1,32 @@
-PortSystem      1.0
+# -*- coding: utf-8; mode: tcl; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- vim:fenc=utf-8:ft=tcl:et:sw=4:ts=4:sts=4
 
-name            tcsh
-version         6.20.00
+PortSystem      1.0
+PortGroup       github 1.0
+
+github.setup    tcsh-org tcsh 6_22_02 TCSH
+version         [string map {_ .} ${github.version}]
 categories      shells
+platforms       darwin
 maintainers     nomaintainer
 license         BSD
 
 description     C shell with file name completion and command line editing
+
 long_description \
     Tcsh is a version of the Berkeley C-Shell, with the addition of: a  \
     command line editor, command and file name completion, listing, etc.\
     and a bunch of small additions to the shell itself.
 
 homepage        https://www.tcsh.org/
-platforms       darwin
-master_sites    ftp://ftp.funet.fi/pub/unix/shells/${name}/ \
-                ftp://ftp.astron.com/pub/${name}/ \
-                ftp://ftp.gw.com/pub/unix/${name}/ 
+github.tarball_from \
+                archive
 
-checksums       rmd160  3f119421ef3500cea1bebe2edf35c6d81ca1c8f3 \
-                sha256  b89de7064ab54dac454a266cfe5d8bf66940cb5ed048d0c30674ea62e7ecef9d
+checksums       rmd160  9a9f09648f460f07fa08c13e19c8052fd3d76522 \
+                sha256  f4f1ba643a5b36718f80709dadf81ded65356e3c82d3f548c68f57e9f61295b6 \
+                size    1006470
 
 patchfiles      patch-Makefile.in.diff
 
 destroot.target install install.man
 depends_lib     port:libiconv \
                 port:ncurses
-
-livecheck.type  regex
-livecheck.url   https://www.tcsh.org/
-livecheck.regex {>([0-9.]+)<}