respect flags

applied on top of debian patches

--- a/configure.in
+++ b/configure.in
@@ -46,8 +46,6 @@
 dnl Checks for libraries.
 dnl AM_PATH_GTK_2_0(2.0.0,,AC_MSG_ERROR(Groundhog needs GTK 2.0))
 
-CXXFLAGS="-O2 -Wall"
-
 dnl Checks for header files.
 AC_CHECK_HEADERS(unistd.h)
 
@@ -57,16 +55,6 @@
 
 dnl Checks for library functions.
 
-dnl Use -Wall if we have gcc.
-changequote(,)dnl
-if test "x$GCC" = "xyes"; then
-  case " $CFLAGS " in
-  *[\ \	]-Wall[\ \	]*) ;;
-  *) CFLAGS="$CFLAGS -Wall" ;;
-  esac
-fi
-changequote([,])dnl
-
 AC_OUTPUT([ m4/Makefile  intl/Makefile
 Makefile 
 src/Makefile