Update bison.bat

make it output the header file, this way the linkage should always work..... "should"

Engine/source/console/torquescript/bison.bat

@@ -1,6 +1,6 @@
 echo Changing to %4 ...
 cd %4
 echo Generating %2 and %3 with prefix %1.
-..\..\..\bin\bison-flex\win_bison.exe -o %2 %3 --defines -p %1
+..\..\..\bin\bison-flex\win_bison.exe -o %2 %3 --defines -p %1 -H
 echo Renaming %2 to %5 .
 move /Y %2 %5