Remove obsolete AS_SCRUB_INCLUDES macro.

This was an ugly work-around for a bogus warning from gcc-3, a
long-superceded compiler. The way the macro was written caused
portablility issues (see PR 102) and other projects (gstreamer
in particular) removed it several years ago.

Thanks to Julian Ospald for bringing it to our attention.

configure.ac

@@ -555,7 +555,6 @@ fi
 
 LIBXML2_REQUIRED=2.5.10
 PKG_CHECK_MODULES(LIBXML2, libxml-2.0 >= $LIBXML2_REQUIRED)
-AS_SCRUB_INCLUDE(LIBXML2_CFLAGS)
 AC_SUBST(LIBXML2_CFLAGS)
 AC_SUBST(LIBXML2_LIBS)
 
@@ -572,7 +571,6 @@ LIBS="$oLIBS"
 ### LIBXSLT
 
 PKG_CHECK_MODULES(LIBXSLT, libxslt)
-AS_SCRUB_INCLUDE(LIBXLT_CFLAGS)
 AC_SUBST(LIBXSLT_CFLAGS)
 AC_SUBST(LIBXSLT_LIBS)
 
@@ -870,7 +868,6 @@ then
     AQBANKING_LIBS="${AQBANKING_LIBS} -lktoblzcheck"
   fi
 
-  AS_SCRUB_INCLUDE(AQBANKING_CFLAGS)
   AC_SUBST(AQBANKING_LIBS)
   AC_SUBST(AQBANKING_CFLAGS)
   _COMPONENTS="$_COMPONENTS aqbanking"
@@ -1086,23 +1083,19 @@ then
 
 
   PKG_CHECK_MODULES(GTK, gtk+-2.0 >= 2.24.0)
-  AS_SCRUB_INCLUDE(GTK_CFLAGS)
   AC_SUBST(GTK_CFLAGS)
   AC_SUBST(GTK_LIBS)
 
   PKG_CHECK_MODULES(GNOMECANVAS, libgnomecanvas-2.0)
-  AS_SCRUB_INCLUDE(GNOMECANVAS_CFLAGS)
   AC_SUBST(GNOMECANVAS_CFLAGS)
   AC_SUBST(GNOMECANVAS_LIBS)
 
   PKG_CHECK_MODULES(GDK_PIXBUF, gdk-pixbuf-2.0)
-  AS_SCRUB_INCLUDE(GDK_PIXBUF_CFLAGS)
   AC_SUBST(GDK_PIXBUF_CFLAGS)
   AC_SUBST(GDK_PIXBUF_LIBS)
 
    # checks for goffice
   PKG_CHECK_MODULES(GOFFICE, libgoffice-0.8 >= 0.7.0 libgoffice-0.8 < 0.9.0, [goffice=1], [AC_MSG_ERROR([Cannot find libgoffice >= 0.7.0 and < 0.9.0])])
-  AS_SCRUB_INCLUDE(GOFFICE_CFLAGS)
   AC_SUBST(GOFFICE_CFLAGS)
   AC_SUBST(GOFFICE_LIBS)
 

macros/as-scrub-include.m4

@@ -1,32 +0,0 @@
-dnl as-scrub-include.m4 0.0.1
-dnl autostars m4 macro for scrubbing CFLAGS of system include dirs
-dnl because gcc 3.x complains about including system including dirs
-dnl
-dnl thomas@apestaart.org
-dnl
-dnl This macro uses output of cpp -v and expects it to contain text that 
-dnl looks a little bit like this:
-dnl #include <...> search starts here:
-dnl  /usr/local/include
-dnl  /usr/lib/gcc-lib/i386-redhat-linux/3.2/include
-dnl  /usr/include
-dnl End of search list.
-
-dnl AS_SCRUB_INCLUDE(VAR)
-dnl example
-dnl AS_SCRUB_INCLUDE(CFLAGS)
-dnl will remove all system include dirs from the given CFLAGS
-
-AC_DEFUN([AS_SCRUB_INCLUDE],
-[
-  GIVEN_CFLAGS=$[$1]
-  INCLUDE_DIRS=`echo | cpp -v 2>&1`
-
-  dnl remove everything from this output between the "starts here" and "End of"
-  dnl line
-  INCLUDE_DIRS=`echo $INCLUDE_DIRS | sed -e 's/.*<...> search starts here://' | sed -e 's/End of search list.*//'`
-  for dir in $INCLUDE_DIRS; do
-    GIVEN_CFLAGS=`echo $GIVEN_CFLAGS | sed -e "s;-I$dir ;;" | sed -e "s;-I$dir$;;"`
-  done
-  [$1]=$GIVEN_CFLAGS
-])