V3 PATCH to aclocal.m4

[Benjamin Kosnik]

A couple of problems here Sir Jason

1) aclocal is autogenerated. Patch acinclude.m4

2) there is only one file that need the backwards includes for building, 
and it has a special rule just so we don't have to cart around backwards 
includes for everything.

see src/Makefile.am

# Use special rules for the deprecated source files so that they find
# deprecated include files.
GLIBCPP_INCLUDE_DIR=@glibcpp_builddir@/include
strstream.lo: strstream.cc
	$(LTCXXCOMPILE) -I$(GLIBCPP_INCLUDE_DIR)/backward -c $<
strstream.o: strstream.cc
	$(CXXCOMPILE) -I$(GLIBCPP_INCLUDE_DIR)/backward -c $<

3) testsuite_flags.in  is what is used to export includes for non-library 
use, like say the g++ testsuite. Perhaps you need this modified:

    --build-includes)
      INCLUDES="-nostdinc++ @GLIBCPP_INCLUDES@
	        -I${SRC_DIR}/libsupc++ -I${SRC_DIR}/libio 
		-I${SRC_DIR}/testsuite -I${BUILD_DIR}/testsuite"
      echo ${INCLUDES}


Perhaps you could explain the problem you've found? I strongly encourage 
the use of standards-conformant headers in the g++ testsuite, if this is 
the issue.

-benjamin