Consistent use of target language version of options

If a version number is supported by the target language prefer to show it in the -help.
For example, -perl5 instead of -perl.

Doc/Manual/Perl5.html

@@ -122,7 +122,7 @@ options are found near the end of the chapter.
 
 
 <p>
-To build a Perl5 module, run SWIG using the <tt>-perl</tt> option as
+To build a Perl5 module, run SWIG using the <tt>-perl</tt> or <tt>-perl5</tt> option as
 follows:
 </p>
 

Doc/Manual/SWIG.html

@@ -128,13 +128,13 @@ Supported Target Language Options
      -mzscheme       - Generate Mzscheme wrappers
      -ocaml          - Generate Ocaml wrappers
      -octave         - Generate Octave wrappers
-     -perl           - Generate Perl wrappers
-     -php7           - Generate PHP7 wrappers
+     -perl5          - Generate Perl 5 wrappers
+     -php7           - Generate PHP 7 wrappers
      -python         - Generate Python wrappers
      -r              - Generate R (aka GNU S) wrappers
      -ruby           - Generate Ruby wrappers
      -scilab         - Generate Scilab wrappers
-     -tcl            - Generate Tcl wrappers
+     -tcl8           - Generate Tcl 8 wrappers
      -xml            - Generate XML wrappers
 
 Experimental Target Language Options

Doc/Manual/Tcl.html

@@ -88,7 +88,7 @@ this is no longer supported.
 
 
 <p>
-To build a Tcl module, run SWIG using the <tt>-tcl</tt> option :
+To build a Tcl module, run SWIG using the <tt>-tcl</tt> or <tt>-tcl8</tt> option :
 </p>
 
 <div class="code"><pre>