Fix a bug when building on Windows from a binary install (rather than

from Python sources).
Not part of the build.

extensions/python/xpcom/src/makefile.win

@@ -89,7 +89,7 @@ LLIBS=$(LLIBS)  $(LIBNSPR)		\
 	$(NULL)
 
 # Hack to get /LIBPATH down to the cmdline
-OS_LIBS=$(OS_LIBS) /libpath:$(PYTHON_SRC)/pcbuild /libpath:$(PYTHON_SRC)/lib    
+OS_LIBS=$(OS_LIBS) /libpath:$(PYTHON_SRC)/pcbuild /libpath:$(PYTHON_SRC)/libs    
 
 LINCS= /I$(PYTHON_SRC)\Include /I$(PYTHON_SRC)\PC \
     $(NULL)