Update a few last svn repo references

doc/asciidoc.conf

@@ -4,7 +4,7 @@ mansource=MacPorts
 manmanual=MacPorts Manual
 guideurl=https://guide.macports.org/
 wikiurl=https://trac.macports.org/wiki/
-sourceurl=https://trac.macports.org/browser/
+sourceurl=https://github.com/macports/
 
 ## man: macro
 #

doc/port-distcheck.1.txt

@@ -29,7 +29,7 @@ BUGS
 checksums available in the 'Portfile' to verify the integrity of the files on
 the mirrors instead. See man:port-checksum[1].
 
-Meanwhile, you can use source:contrib/port-checkmirrors[port-checkmirrors] from
+Meanwhile, you can use source:macports-contrib/blob/master/mirror-utils/port-checkmirrors[port-checkmirrors] from
 contrib to do that.
 
 include::global-flags.txt[]

doc/portundocumented.7.txt

@@ -18,7 +18,7 @@ CONTRIBUTING
 All sort of contributions to MacPorts base, ports and especially the
 documentation you were just looking for are welcome. If you care about MacPorts
 and would like to improve our documentation, please take a look at the source
-code of the man pages https://trac.macports.org/browser/trunk/base/doc[in our
+code of the man pages https://github.com/macports/macports-base/tree/master/doc[in our
 repository] and get in touch with us on our wiki:MailingLists[mailing lists].
 
 

src/macports1.0/macports.tcl

@@ -87,7 +87,7 @@ namespace eval macports {
 #
 # This proc never fails and always returns the current version in the format
 # major.minor.patch. Note that the value of patch will not be meaningful for
-# trunk releases, but we guarantee that it will compare to be greater than any
+# Git master, but we guarantee that it will compare to be greater than any
 # released versions from the same major.minor.x series. You should use the
 # MacPorts-provided Tcl extension "vercmp" to do version number comparisons on
 # the return value of this function.

src/macports1.0/selfupdate.tcl

@@ -204,7 +204,7 @@ proc selfupdate::main {{optionslist {}} {updatestatusvar {}}} {
             }
         }
     } elseif {$comp < 0} {
-        ui_msg "$macports::ui_prefix MacPorts base is probably trunk or a release candidate"
+        ui_msg "$macports::ui_prefix MacPorts base is probably master or a release candidate"
     } else {
         ui_msg "$macports::ui_prefix MacPorts base is already the latest version"
     }