[Gm2] latest git changes and regression test

[Gaius Mulley]

Hi,

    * gm2/gm2-compiler/M2Quads.mod:  removed RangeCheck quadruples
      from
      changing the read/write lists.  Also removed PutWriteQuad
      from being called inside MarkAsRead.  More regression tests
      pass.
      (testsuite/gm2/errors/fail/testfio.mod)
      (testsuite/gm2/errors/fail/testinit.mod)

    * gm2/examples/pge/foo.mod:  added comment.
    * gm2/gm2-compiler/M2Code.mod:  removed references to StrIO and
      NumberIO and replaced them with printf0 and printf1.
      Re-introduced OptimizationAnalysis which also reports on
      total source lines compiled.
    * gcc/gm2/gm2-compiler/M2Options.def:  SetStatistic (New
    * procedure).
    * gcc/gm2/gm2-compiler/M2Options.def:  SetStatistic (New
    * procedure)
      implemented.
    * gm2/gm2-gcc/m2options.h:  SetStatistic (New prototype).
    * gm2/gm2-lang.c:  handle -fm2-statistics.
    * gm2/lang-options.h:  enumerate -fm2-statistics.
    * gm2/lang.opt:  enumerate -fm2-statistics.
    * gm2/m2.flex:  include timevar.h.  Call timevar_push,
    * timevar_pop
      inside m2flex_GetToken.

the regression test results report 66 failures on Debian Wheezy.
I will update the documentation to include -fm2-whole-program
and -fm2-statistics

regards,
Gaius