Replace Makefile.in dependencies on expr.h with variable $(EXPR_H),

which contains headers also pulled in via expr.h.
        * Makefile.in (EXPR_H): New dependency variable.
        (c-typeck.o): Depend on $(EXPR_H) instead of expr.h.
        (c-iterate.o): Likewise.
        (gencheck): Depend on $(TREE_H) instead of tree.h, etc.
        (stor-layout.o): Depend on $(EXPR_H) instead of expr.h.
        (toplev.o): Likewise.  Also depend on $(RECOG_H) instead of recog.h.
        (varasm.o): Depend on $(EXPR_H) instead of expr.h.
        (function.o): Likewise.
        (stmt.o): Likewise.
        (except.o): Likewise.
        (expr.o): Likewise.
        (calls.o): Likewise.
        (expmed.o): Likewise.
        (explow.o): Likewise.
        (optabs.o): Likewise.
        (sdbout.o): Likewise.
        (dwarf2out.o): Likewise.
        (emit-rtl.o): Likewise.
        (integrate.o): Likewise.
        (jump.o): Likewise.
        (cse.o): Likewise.
        (gcse.o): Likewise.  Also depend on $(BASIC_BLOCK_H) instead of
        basic-block.h.
        (loop.o): Depend on $(EXPR_H) instead of expr.h.
        (unroll.o): Likewise.
        (combine.o): Likewise.
        (reload.o): Likewise.
        (reload1.o): Likewise.
        (caller-save.o): Likewise.
        (reorg.o): Likewise.
        (alias.o): Don't depend on insn-codes.h.
        (regmove.o): Depend on $(RECOG_H)/$(EXPR_H) instead of recog.h/expr.h.
        (insn-emit.o): Depend on $(EXPR_H) instead of expr.h.
        (insn-opinit.o): Likewise.

From-SVN: r20748

gcc/ChangeLog

+Sat Jun 27 07:35:21 1998  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>
+
+	* Makefile.in (EXPR_H): New dependency variable.
+	(c-typeck.o): Depend on $(EXPR_H) instead of expr.h.
+	(c-iterate.o): Likewise.
+	(gencheck): Depend on $(TREE_H) instead of tree.h, etc.
+	(stor-layout.o): Depend on $(EXPR_H) instead of expr.h.
+	(toplev.o): Likewise.  Also depend on $(RECOG_H) instead of recog.h.
+	(varasm.o): Depend on $(EXPR_H) instead of expr.h.
+	(function.o): Likewise.
+	(stmt.o): Likewise.
+	(except.o): Likewise.
+	(expr.o): Likewise.
+	(calls.o): Likewise.
+	(expmed.o): Likewise.
+	(explow.o): Likewise.
+	(optabs.o): Likewise.
+	(sdbout.o): Likewise.
+	(dwarf2out.o): Likewise.
+	(emit-rtl.o): Likewise.
+	(integrate.o): Likewise.
+	(jump.o): Likewise.
+	(cse.o): Likewise.
+	(gcse.o): Likewise.  Also depend on $(BASIC_BLOCK_H) instead of
+	basic-block.h.
+	(loop.o): Depend on $(EXPR_H) instead of expr.h.
+	(unroll.o): Likewise.
+	(combine.o): Likewise.
+	(reload.o): Likewise.
+	(reload1.o): Likewise.
+	(caller-save.o): Likewise.
+	(reorg.o): Likewise.
+	(alias.o): Don't depend on insn-codes.h.
+	(regmove.o): Depend on $(RECOG_H)/$(EXPR_H) instead of recog.h/expr.h.
+	(insn-emit.o): Depend on $(EXPR_H) instead of expr.h.
+	(insn-opinit.o): Likewise.
+
 Sat Jun 27 01:35:14 1998  Jeffrey A Law  (law@cygnus.com)
 
 	* choose-temp.c (choose_temp_base): Remove MPW bits.  Use mkstemp