avoided compilation warnings on gcc 3.3.x systems

diff --git a/configure.in b/configure.in
index 894756a..968bc2d 100644
--- a/configure.in
+++ b/configure.in
@@ -3,7 +3,7 @@
 AC_CANONICAL_BUILD
 AC_CANONICAL_TARGET
 AC_PREREQ(2.53)
-AM_INIT_AUTOMAKE(asn1c, 0.9.1)
+AM_INIT_AUTOMAKE(asn1c, 0.9.2)
 
 AC_SUBST(PATH)
 
@@ -40,14 +40,14 @@
 dnl *** Building mingw32 with cygwin compiler ***
 case "$host_os" in
 cygwin*)
-	CFLAGS="$CFLAGS -DWIN32"
+	dnl CFLAGS="$CFLAGS -DWIN32"
 	case "$target" in
 	*mingw*)
 		CC="$CC -mno-cygwin"
 	esac
 	;;
 mingw* | p32*)
-	CFLAGS="$CFLAGS -DWIN32"
+	dnl CFLAGS="$CFLAGS -DWIN32"
 	;;
 esac