Disable LO_CLANG_SHARED_PLUGINS on Windows for now

...needs some more modifications to make it work with clang-cl

Change-Id: I6e2f8c9651b0532e21ec5acf94e8bae0a0f8f06e
Reviewed-on: https://gerrit.libreoffice.org/69808
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

compilerplugins/Makefile-clang.mk

@@ -25,6 +25,10 @@ endif
 # Whether to make plugins use one shared ASTRecursiveVisitor (plugins run faster).
 # By default enabled, disable if you work on an affected plugin (re-generating takes time).
 LO_CLANG_SHARED_PLUGINS=1
+#TODO:
+ifeq ($(OS),WNT)
+LO_CLANG_SHARED_PLUGINS=
+endif
 
 # The uninteresting rest.