Split Tcl make targets into separate ones.

Tools/buildbot/external.bat

@@ -4,14 +4,18 @@
 call "Tools\buildbot\external-common.bat"
 call "%VS90COMNTOOLS%\vsvars32.bat"
 
-if not exist tcltk\bin\tcl85g.dll (
+if not exist tcltk\bin\tcl85.dll (
+    @rem all and install need to be separate invocations, otherwise nmakehlp is not found on install
     cd tcl-8.5.2.1\win
-    nmake -f makefile.vc COMPILERFLAGS=-DWINVER=0x0500 DEBUG=1 INSTALLDIR=..\..\tcltk clean all install
+    nmake -f makefile.vc COMPILERFLAGS=-DWINVER=0x0500 DEBUG=1 INSTALLDIR=..\..\tcltk clean all 
+    nmake -f makefile.vc DEBUG=1 INSTALLDIR=..\..\tcltk install
     cd ..\..
 )
 
-if not exist tcltk\bin\tk85g.dll (
+if not exist tcltk\bin\tk85.dll (
     cd tk-8.5.2.0\win    
-    nmake -f makefile.vc COMPILERFLAGS=-DWINVER=0x0500 DEBUG=1 INSTALLDIR=..\..\tcltk TCLDIR=..\..\tcl-8.5.2.1 clean all install
+    nmake -f makefile.vc COMPILERFLAGS=-DWINVER=0x0500 DEBUG=1 INSTALLDIR=..\..\tcltk TCLDIR=..\..\tcl-8.5.2.1 clean
+    nmake -f makefile.vc COMPILERFLAGS=-DWINVER=0x0500 DEBUG=1 INSTALLDIR=..\..\tcltk TCLDIR=..\..\tcl-8.5.2.1 all
+    nmake -f makefile.vc COMPILERFLAGS=-DWINVER=0x0500 DEBUG=1 INSTALLDIR=..\..\tcltk TCLDIR=..\..\tcl-8.5.2.1 install
     cd ..\..
 )