Unvendor zlib from makefile.vc.
https://core.tcl-lang.org/tk/finfo?name=win/makefile.vc&m=bd9e6671712d016a&ci=e987bb51b8fce99b
===================================================================
--- win/makefile.vc.orig	2024-05-01 16:53:58
+++ win/makefile.vc	2024-05-01 17:05:40
@@ -317,7 +317,7 @@
 	$(TMP_DIR)\uncompr.obj \
 	$(TMP_DIR)\zutil.obj
 !else
-ZLIBOBJS = $(OUT_DIR)\zdll.lib
+ZLIBOBJS = $(LIBRARY_LIB)\zdll.lib
 !endif
 
 TOMMATHOBJS = \
@@ -445,7 +445,7 @@
 release:    setup $(TCLSH) $(TCLSTUBLIB) dlls pkgs
 core:	    setup $(TCLLIB) $(TCLSTUBLIB)
 shell:	    setup $(TCLSH)
-dlls:	    setup $(TCLREGLIB) $(TCLDDELIB) $(OUT_DIR)\zlib1.dll
+dlls:	    setup $(TCLREGLIB) $(TCLDDELIB)
 all:	    setup $(TCLSH) $(TCLSTUBLIB) dlls $(CAT32) pkgs
 tcltest:    setup $(TCLTEST) dlls $(CAT32)
 install:    install-binaries install-libraries install-docs install-pkgs
@@ -520,23 +520,6 @@
 	$(_VC_MANIFEST_EMBED_DLL)
 !endif
 
-!if "$(MACHINE)" == "ARM64"
-$(OUT_DIR)\zlib1.dll:	$(COMPATDIR)\zlib\win64-arm\zlib1.dll
-	$(COPY) $(COMPATDIR)\zlib\win64-arm\zlib1.dll $(OUT_DIR)\zlib1.dll
-$(OUT_DIR)\zdll.lib:	$(COMPATDIR)\zlib\win64-arm\zdll.lib
-	$(COPY) $(COMPATDIR)\zlib\win64-arm\zdll.lib $(OUT_DIR)\zdll.lib
-!elseif "$(MACHINE)" == "IX86"
-$(OUT_DIR)\zlib1.dll:	$(COMPATDIR)\zlib\win32\zlib1.dll
-	$(COPY) $(COMPATDIR)\zlib\win32\zlib1.dll $(OUT_DIR)\zlib1.dll
-$(OUT_DIR)\zdll.lib:	$(COMPATDIR)\zlib\win32\zdll.lib
-	$(COPY) $(COMPATDIR)\zlib\win32\zdll.lib $(OUT_DIR)\zdll.lib
-!else
-$(OUT_DIR)\zlib1.dll:	$(COMPATDIR)\zlib\win64\zlib1.dll
-	$(COPY) $(COMPATDIR)\zlib\win64\zlib1.dll $(OUT_DIR)\zlib1.dll
-$(OUT_DIR)\zdll.lib:	$(COMPATDIR)\zlib\win64\zdll.lib
-	$(COPY) $(COMPATDIR)\zlib\win64\zdll.lib $(OUT_DIR)\zdll.lib
-!endif
-
 pkgs:
 	@for /d %d in ($(PKGSDIR)\*) do \
 	  @if exist "%~fd\win\makefile.vc" ( \
@@ -783,7 +766,7 @@
 	$(CCAPPCMD) $?
 
 $(TMP_DIR)\tclZlib.obj: $(GENERICDIR)\tclZlib.c
-	$(cc32) $(pkgcflags) -I$(COMPATDIR)\zlib -Fo$@ $?
+	$(cc32) $(pkgcflags) -I$(LIBRARY_INC)\zlib -Fo$@ $?
 
 $(TMP_DIR)\tclPkgConfig.obj: $(GENERICDIR)\tclPkgConfig.c
 	$(cc32) $(pkgcflags) \
@@ -880,11 +863,6 @@
 $<
 <<
 
-{$(COMPATDIR)\zlib}.c{$(TMP_DIR)}.obj::
-	$(cc32) $(pkgcflags) -Fo$(TMP_DIR)\ @<<
-$<
-<<
-
 $(TMP_DIR)\tclsh.res: $(TMP_DIR)\tclsh.exe.manifest $(WIN_DIR)\tclsh.rc
 
 $(TMP_DIR)\tcltest.res: $(TMP_DIR)\tclsh.exe.manifest $(WIN_DIR)\tcltest.rc
@@ -900,7 +878,6 @@
 	@$(CPY) "$(TCLLIB)" "$(BIN_INSTALL_DIR)\"
 !endif
 	@$(CPY) "$(TCLIMPLIB)" "$(LIB_INSTALL_DIR)\"
-	@$(CPY) "$(OUT_DIR)\zlib1.dll" "$(BIN_INSTALL_DIR)\"
 !if exist($(TCLSH))
 	@echo Installing $(TCLSHNAME)
 	@$(CPY) "$(TCLSH)" "$(BIN_INSTALL_DIR)\"