[patch] More include cleanups

[Steven Bosscher <stevenb dot gcc at gmail dot com>]

Hi,

This started as an attempt to remove rtl headers from tree*.c, but I
found out that you end up including real.h in all those files instead
of rtl.h.

So I included real.h in tree.h, and fixed-value.h too for good
measure.  Can't do that, of course, without cleaning up all the places
where those two files were already included. There is still a long way
to go, but IMHO this is a step in the right direction.

Bootstrapped&tested on x86_64-unknown-linux-gnu.
OK for trunk?

Ciao!
Steven

gcc/ChangeLog:
        * tree.h: Include real.h and fixed-value.h as basic datatypes.
        * dfp.c, convert.c, reload1.c, reginfo.c, tree-flow.h,
        tree-ssa-threadedge.c, tree-ssanames.c, tree-loop-linear.c,
        tree-into-ssa.c, tree-vect-generic.c, tree-ssa-structalias.c,
        tree-ssa-loop-im.c, tree-dump.c, tree-complex.c, tree-ssa-uninit.c,
        genrecog.c, tree-ssa-threadupdate.c, tree-ssa-loop-niter.c,
        tree-pretty-print.c, tree-loop-distribution.c,
        tree-ssa-loop-unswitch.c, c-lex.c, optabs.c, postreload-gcse.c,
        tree-ssa-loop-manip.c, postreload.c, tree-ssa-loop-ch.c,
        tree-tailcall.c, tree.c, reload.c, tree-scalar-evolution.c, rtlanal.c,
        tree-phinodes.c, builtins.c, final.c, genoutput.c, fold-const.c,
        tree-ssa-dse.c, genautomata.c, tree-ssa-uncprop.c, toplev.c,
        tree-chrec.c, genemit.c, c-cppbuiltin.c, tree-ssa-sccvn.c,
        tree-ssa-ccp.c, tree-ssa-loop-ivopts.c, mode-switching.c,
        tree-call-cdce.c, cse.c, genpeep.c, tree-ssa-math-opts.c,
        tree-ssa-dom.c, tree-nrv.c, tree-ssa-propagate.c, tree-ssa-alias.c,
        tree-ssa-sink.c, jump.c, ifcvt.c, dwarf2out.c, expr.c, genattrtab.c,
        genconditions.c, tree-ssa-loop-ivcanon.c, tree-ssa-loop.c,
        tree-parloops.c, recog.c, tree-ssa-address.c, lcm.c, tree-eh.c,
        gimple-pretty-print.c, c-pretty-print.c, print-rtl.c, gcse.c,
        tree-if-conv.c, tree-data-ref.c, tree-affine.c, gimplify.c,
        tree-ssa-phiopt.c, implicit-zee.c, expmed.c, tree-dfa.c, emit-rtl.c,
        store-motion.c, cselib.c, tree-cfgcleanup.c, simplify-rtx.c,
        tree-ssa-pre.c, genpreds.c, tree-mudflap.c, print-tree.c,
        tree-ssa-copy.c, tree-ssa-forwprop.c, tree-ssa-dce.c, varasm.c,
        tree-nested.c, tree-ssa.c, tree-ssa-loop-prefetch.c, rtl.c,
        tree-inline.c, integrate.c, tree-optimize.c, tree-ssa-phiprop.c,
        fixed-value.c, combine.c, tree-profile.c, c-common.c, sched-vis.c,
        tree-cfg.c, passes.c, tree-ssa-reassoc.c, config/alpha/alpha.c,
        config/frv/frv.c, config/s390/s390.c, config/m32c/m32c.c,
        config/spu/spu.c, config/sparc/sparc.c, config/mep/mep.c,
        config/m32r/m32r.c, config/rx/rx.c, config/i386/i386.c,
        config/sh/sh.c, config/pdp11/pdp11.c, config/avr/avr.c,
        config/crx/crx.c, config/xtensa/xtensa.c, config/stormy16/stormy16.c,
        config/fr30/fr30.c, config/lm32/lm32.c, config/moxie/moxie.c,
        config/m68hc11/m68hc11.c, config/cris/cris.c, config/iq2000/iq2000.c,
        config/mn10300/mn10300.c, config/ia64/ia64.c, config/m68k/m68k.c,
        config/rs6000/rs6000.c, config/picochip/picochip.c, config/darwin.c,
        config/arc/arc.c, config/mcore/mcore.c, config/score/score3.c,
        config/score/score7.c, config/score/score.c, config/arm/arm.c,
        config/pa/pa.c, config/mips/mips.c, config/vax/vax.c,
        config/h8300/h8300.c, config/v850/v850.c, config/mmix/mmix.c,
        config/bfin/bfin.c:
        Clean up redundant includes.

java/ChangeLog:
        * typeck.c, decl.c, jcf-parse.c, except.c, expr.c:

cp/Changelog:
        * error.c, tree.c, typeck2.c, cxx-pretty-print.c, mangle.c:
        Clean up redundant includes.

fortran/ChangeLog:
        * trans-const.c, trans-types.c, trans-intrinsic.c:
        Clean up redundant includes.

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