A libio patch for egcs 1.0.2

[Jeffrey A Law]

  In message < m0y5Fva-00058KC@ocean.lucon.org >you write:
  > Hi,
  > 
  > This patch from egcs for egcs 1.0.2 will enable libio to support
  > "make check" when libstdc++ is configured for gcc 2.8.1.
  > 
  > Thanks.
  > 
  > 
  > -- 
  > H.J. Lu (hjl@gnu.org)
  > --
  > Tue Jan 27 10:35:22 1998  H.J. Lu  (hjl@gnu.org)
  > 
  > 	* configure.in (topsrcdir): New.
  > 	(CHECK_SUBDIRS, configdirs): Check ${topsrcdir}/gcc instead.
  > 	(config-ml.in): Use ${topsrcdir}/config-ml.in.
  > 
  > 	* tests/configure.in (topsrcdir): New.
  > 	(CHECK): Check ${topsrcdir}/gcc instead.
  > 
  > Tue Jan 13 21:30:33 1998  H.J. Lu  (hjl@gnu.org)
  > 
  > 	* configure.in (CHECK_SUBDIRS): Set to testsuite only if
  > 	${srcdir}/../gcc exists.
  > 	(configdirs): Include testsuite only if ${srcdir}/../gcc exists.
  > 
  > 	* tests/Makefile.in (check): Depend on $(CHECK).
  > 
  > 	* tests/configure.in (CHECK): Set to "check-iostream
  > 	check-stdio" if ${srcdir}/../../gcc doesn't exists.
Like the libstdc++ version, I'm convinced we need this change, but
I went ahead and installed it on the release branch.
jeff