Use EXPORTS instead of installing headers by hand.

Bug #98371 sr=alecf

dbm/include/Makefile.win

@@ -47,8 +47,7 @@ MAKE_OBJ_TYPE=EXE
 #// install headers
 #//
 #//------------------------------------------------------------------------
-INSTALL_DIR=$(XPDIST)\include
-INSTALL_FILE_LIST= nsres.h cdefs.h mcom_db.h ncompat.h winfile.h
+EXPORTS=nsres.h cdefs.h mcom_db.h ncompat.h winfile.h
 
 #//------------------------------------------------------------------------
 #//
@@ -59,5 +58,3 @@ include <$(DEPTH)/config/rules.mak>
 
 CFLAGS = $(CFLAGS) -DMOZILLA_CLIENT
 
-export:: INSTALL_FILES
-