Issue #21683: Add Tix build to the Windows buildbot scripts.

Tools/buildbot/external-amd64.bat

@@ -12,10 +12,17 @@ if not exist tcltk64\bin\tcl86tg.dll (
 )
 
 if not exist tcltk64\bin\tk86tg.dll (
-    cd tk-8.6.1.0\win    
+    cd tk-8.6.1.0\win
     nmake -f makefile.vc OPTS=symbols MACHINE=AMD64 INSTALLDIR=..\..\tcltk64 TCLDIR=..\..\tcl-8.6.1.0 clean
     nmake -f makefile.vc OPTS=symbols MACHINE=AMD64 INSTALLDIR=..\..\tcltk64 TCLDIR=..\..\tcl-8.6.1.0 all
     nmake -f makefile.vc OPTS=symbols MACHINE=AMD64 INSTALLDIR=..\..\tcltk64 TCLDIR=..\..\tcl-8.6.1.0 install-binaries install-libraries
     cd ..\..
 )
 
+if not exist tcltk64\lib\tix8.4.3\tix84g.dll (
+    cd tix-8.4.3.4\win
+    nmake -f python.mak DEBUG=1 MACHINE=AMD64 TCL_DIR=..\..\tcl-8.6.1.0 TK_DIR=..\..\tk-8.6.1.0 INSTALL_DIR=..\..\tcltk64 clean
+    nmake -f python.mak DEBUG=1 MACHINE=AMD64 TCL_DIR=..\..\tcl-8.6.1.0 TK_DIR=..\..\tk-8.6.1.0 INSTALL_DIR=..\..\tcltk64 all
+    nmake -f python.mak DEBUG=1 MACHINE=AMD64 TCL_DIR=..\..\tcl-8.6.1.0 TK_DIR=..\..\tk-8.6.1.0 INSTALL_DIR=..\..\tcltk64 install
+    cd ..\..
+)

Tools/buildbot/external-common.bat

@@ -9,9 +9,10 @@ cd ..
 @rem if exist tcltk64 rd /s/q tcltk64
 @rem if exist tcl-8.6.1.0 rd /s/q tcl-8.6.1.0
 @rem if exist tk-8.6.1.0 rd /s/q tk-8.6.1.0
+@rem if exist tix-8.4.3.4 rd /s/q tix-8.4.3.4
 @rem if exist db-4.4.20 rd /s/q db-4.4.20
 @rem if exist openssl-1.0.1h rd /s/q openssl-1.0.1h
-@rem if exist sqlite-3.7.12 rd /s/q sqlite-3.7.12    
+@rem if exist sqlite-3.7.12 rd /s/q sqlite-3.7.12
 
 @rem bzip
 if not exist bzip2-1.0.6 (
@@ -31,6 +32,7 @@ if not exist tcl-8.6.1.0 (
    svn export http://svn.python.org/projects/external/tcl-8.6.1.0
 )
 if not exist tk-8.6.1.0 svn export http://svn.python.org/projects/external/tk-8.6.1.0
+if not exist tix-8.4.3.4 svn export http://svn.python.org/projects/external/tix-8.4.3.4
 
 @rem sqlite3
 if not exist sqlite-3.8.3.1 (

Tools/buildbot/external.bat

@@ -19,3 +19,11 @@ if not exist tcltk\bin\tk86tg.dll (
     nmake -f makefile.vc OPTS=symbols INSTALLDIR=..\..\tcltk TCLDIR=..\..\tcl-8.6.1.0 install-binaries install-libraries
     cd ..\..
 )
+
+if not exist tcltk\lib\tix8.4.3\tix84g.dll (
+    cd tix-8.4.3.4\win
+    nmake -f python.mak DEBUG=1 MACHINE=IX86 TCL_DIR=..\..\tcl-8.6.1.0 TK_DIR=..\..\tk-8.6.1.0 INSTALL_DIR=..\..\tcltk clean
+    nmake -f python.mak DEBUG=1 MACHINE=IX86 TCL_DIR=..\..\tcl-8.6.1.0 TK_DIR=..\..\tk-8.6.1.0 INSTALL_DIR=..\..\tcltk all
+    nmake -f python.mak DEBUG=1 MACHINE=IX86 TCL_DIR=..\..\tcl-8.6.1.0 TK_DIR=..\..\tk-8.6.1.0 INSTALL_DIR=..\..\tcltk install
+    cd ..\..
+)