Added -t option to mesgen.emf and used it to fix win32 github action

.github/workflows/binaries-win32.yml

@@ -64,7 +64,7 @@ jobs:
     - name: Create mes
       shell: pwsh
       run: |
-        ..\src\.win32vc16-release-mecw\mecw32.exe -p -n "@mesgen" -f -p ..\src\.win32vc16s-release-mew\mew32.exe -o ../../binaries-win32/mes-win32.exe
+        ..\src\.win32vc16-release-mecw\mecw32.exe -p -n "@mesgen" -f -p ..\src\.win32vc16s-release-mew\mew32.exe -o ../../binaries-win32/mes-win32.exe -t ..\3rdparty\tfs\.win32vc16-release\tfs.exe
       working-directory: ./microemacs/mesingle
 
     - name: Upload Packages

microemacs/mesingle/mesgen.emf

@@ -9,6 +9,7 @@
 ;
 ;set-variable $debug 8
 set-variable %mes-opts ""
+set-variable %mes-tfs "tfs"
 set-variable #l0 0
 !while &exi &cat ".about.arg" #l0
   set-variable #l1 &ind &cat ".about.arg" &pinc #l0 1
@@ -27,13 +28,17 @@ set-variable #l0 0
     -1 ml-write "       : Output file name"
     -1 ml-write "  -p <file>"
     -1 ml-write "       : MicroEmacs program/executable file"
+    -1 ml-write "  -t <file>"
+    -1 ml-write "       : TFS executable - must run on current platform"
     4 exit-emacs 1
   !endif
   set-variable %mes-opts &cat %mes-opts &rig #l1 1
   !if &sin "o" #l1
     set-variable %mes-outn &ind &cat ".about.arg" &pinc #l0 1
   !elif &sin "p" #l1
     set-variable %mes-prog &ind &cat ".about.arg" &pinc #l0 1
+  !elif &sin "t" #l1
+    set-variable %mes-tfs &ind &cat ".about.arg" &pinc #l0 1
   !endif
 !done
 set-variable %mes-verb &sub &len %mes-opts &len &rep %mes-opts "V" ""
@@ -78,7 +83,7 @@ define-macro mesingle-gen
     !return
   !endif
   !if &seq &set #l1 &whi &cat #l0 "tfs" "ERROR"
-    !if &seq &set #l1 &whi "tfs" "ERROR"
+    !if &seq &set #l1 &whi %mes-tfs "ERROR"
       -2 ml-write "mesgen Error: failed to locate tfs executable"
       !abort
     !endif