[wwwdocs] Bring release branch and release tags up-to-date in svn.html

[Gerald Pfeifer]

Generalize description of GCC branch names and simplify description
of GCC release tags.  Use more recent examples for both.

Committed.

Gerald

Index: svn.html
===================================================================
RCS file: /cvs/gcc/wwwdocs/htdocs/svn.html,v
retrieving revision 1.204
retrieving revision 1.206
diff -u -r1.204 -r1.206
--- svn.html	14 Nov 2015 23:40:21 -0000	1.204
+++ svn.html	15 Nov 2015 22:35:55 -0000	1.206
@@ -106,8 +106,8 @@
 <code>svn co svn://gcc.gnu.org/svn/gcc/branches/<em>branchname</em> gcc</code>
 </p></blockquote>
 
-<p>(The release branch of the latest version of GCC <em>x</em>.<em>y</em>
-is named <code>gcc-<em>x</em>_<em>y</em>-branch</code>.)</p>
+<p>(The release branch of the GCC <em>SERIES</em> release series
+is named <code>gcc-<em>SERIES</em>-branch</code>.)</p>
 
 
 <p>Similarly a tag called <em>tagname</em> can be checked out with the
@@ -117,25 +117,21 @@
 <code>svn co svn://gcc.gnu.org/svn/gcc/tags/<em>tagname</em> gcc</code>
 </p></blockquote>
 
-<p>(For recent releases, the SVN tag for GCC <i>X</i>.<i>Y</i>.<i>Z</i>
-is of the form
+<p>(The SVN tag for GCC <i>X</i>.<i>Y</i>.<i>Z</i> is of the form
 <code>gcc_<em>X</em>_<em>Y</em>_<em>Z</em>_release</code>.)</p>
 
 
 <p>The following list provides some representative examples:</p>
 
 <ul>
-  <li>gcc-4_3-branch</li>
-  <li>gcc_4_3_4_release</li>
-  <li>gcc_4_3_3_release</li>
-  <li>gcc_4_3_2_release</li>
-  <li>gcc_4_3_1_release</li>
-  <li>gcc_4_3_0_release</li>
+  <li>gcc-5-branch</li>
+  <li>gcc-4_9-branch</li>
+  <li>gcc_4_9_3_release</li>
+  <li>gcc_4_9_2_release</li>
+  <li>gcc_4_9_1_release</li>
+  <li>gcc_4_9_0_release</li>
+  <li>gcc-4_8-branch</li>
   <li>gcc-3_4-branch</li>
-  <li>gcc_3_4_3_release</li>
-  <li>gcc_3_4_2_release</li>
-  <li>gcc_3_4_1_release</li>
-  <li>gcc_3_4_0_release</li>
 </ul>
 
 <p>To get a list of available branches, use the command:</p>