Add, revise .bat files for Windows

Add pma.bat pmg.bat pmt.bat pmv.bat trun.bat wsgirunner.bat
 so we can just invoke commands pmt ... instead of pmt.py ... etc.
Also, fix broken tpath.bat - use ; (not unix :) to separate directories
Also (unrelated to Windows) in www/index.html add new 'view the graphs' links

Author: jon-jacky

pymodel/pma.bat

@@ -0,0 +1,4 @@
+@echo off
+rem Make it possible to command just pma instead of pma.py
+pma.py %1 %2 %3 %4 %5 %6 %7 %8 %9
+

pymodel/pmg.bat

@@ -0,0 +1,4 @@
+@echo off
+rem Make it possible to command just pmg instead of pmg.py
+pmg.py %1 %2 %3 %4 %5 %6 %7 %8 %9
+

pymodel/pmt.bat

@@ -0,0 +1,4 @@
+@echo off
+rem Make it possible to command just pmt instead of pmt.py
+pmt.py %1 %2 %3 %4 %5 %6 %7 %8 %9
+

pymodel/pmv.bat

@@ -0,0 +1,4 @@
+@echo off
+rem Make it possible to command just pmv instead of pmv.py
+pmv.py %1 %2 %3 %4 %5 %6 %7 %8 %9
+

pymodel/tpath.bat

@@ -1,3 +1,3 @@
 @echo off
 rem Enable tools in this directory to import modules in current,test directories
-set PYTHONPATH=.:..:test:tests:%PYTHONPATH%
+set PYTHONPATH=.;..;test;tests;%PYTHONPATH%

pymodel/trun.bat

@@ -0,0 +1,4 @@
+@echo off
+rem Make it possible to command just trun instead of trun.py
+trun.py %1 %2 %3 %4 %5 %6 %7 %8 %9
+

pymodel/wsgirunner.bat

@@ -0,0 +1,4 @@
+@echo off
+rem Make it possible to command just wsgirunner instead of wsgirunner.py
+wsgirunner.py %1 %2 %3 %4 %5 %6 %7 %8 %9
+

www/index.html

@@ -67,8 +67,10 @@ <h2>PyModel: Model-based testing in Python</h2>
 For more information, peruse the <a href="../talks">talks</a>, 
 read the <a href="concepts.html">overview</a> and
 the more detailed <a href="../notes">notes</a>, browse
-the <a href="../pymodel">code</a>, or try
-the <a href="../samples">samples</a>.
+the <a href="../pymodel">code</a>, 
+view the <a href="../samples/Stack/svg">graphs</a>
+(<a href="../samples/WebApplication/svg">etc.</a>)
+or try the <a href="../samples">samples</a>.
 
 <p>
 Here are the <a href="../talks/pymodel-nwpd10.pdf">slides</a> for