Update documentation links to point to maintained branch.

BUG:366631
FIXED-IN:16.08

README

@@ -28,7 +28,7 @@
     - the `kdesrc-buildrc-sample` file in the kdesrc-build directory
       gives a few hints at what options are available. Also, look at the 
       documentation at
-      https://docs.kde.org/trunk4/en/extragear-utils/kdesrc-build/conf-options-table.html
+      https://docs.kde.org/trunk5/en/extragear-utils/kdesrc-build/conf-options-table.html
 
 3. From the kdesrc-build directory, run "./kdesrc-build --metadata-only". This
    will download some data that describes the KDE source repositories and their

kdesrc-buildrc-kf5-sample

@@ -3,7 +3,7 @@
 #
 # See the kdesrc-buildrc-sample for explanations of what the options do, or
 # view the manpage or kdesrc-build documentation at
-# https://docs.kde.org/trunk4/en/extragear-utils/kdesrc-build/index.html
+# https://docs.kde.org/trunk5/en/extragear-utils/kdesrc-build/index.html
 global
     branch-group kf5-qt5
     kdedir ~/kde-5 # Where to install KF5-based software

kdesrc-buildrc-sample

@@ -97,7 +97,7 @@ global
 #
 
 # For the full list of options please see
-# https://docs.kde.org/trunk4/en/extragear-utils/kdesrc-build/conf-options-table.html
+# https://docs.kde.org/trunk5/en/extragear-utils/kdesrc-build/conf-options-table.html
 end global
 
 # With the global options set, the remainder of the file selects which modules

modules/ksb/Application.pm

@@ -980,7 +980,7 @@ of $rcfile.
 A repository is needed to determine where to download the source code from.
 
 Most will want to use the b[g[kde-projects] repository. See also
-https://docs.kde.org/trunk4/en/extragear-utils/kdesrc-build/kde-modules-and-selection.html#module-sets
+https://docs.kde.org/trunk5/en/extragear-utils/kdesrc-build/kde-modules-and-selection.html#module-sets
 EOF
         die make_exception('Config', 'Missing repository option');
     }
@@ -2643,10 +2643,10 @@ The man page can also be found online at
 https://kdesrc-build.kde.org/documentation/kdesrc-build.1.html
 
 This help is not comprehensive, to see a listing of all options please visit:
-https://docs.kde.org/trunk4/en/extragear-utils/kdesrc-build/conf-options-table.html
+https://docs.kde.org/trunk5/en/extragear-utils/kdesrc-build/conf-options-table.html
 
 For all command line options, please visit:
-https://docs.kde.org/trunk4/en/extragear-utils/kdesrc-build/supported-cmdline-params.html
+https://docs.kde.org/trunk5/en/extragear-utils/kdesrc-build/supported-cmdline-params.html
 DONE
 }