debian: add support for multiarch

Enhance the debian build rules so it will create multiarch compliant
packages on those distributions that have support for it.

Also remove e2initrd-helper from the e2fsprogs package since no one
uses it any more.

Also update the debian policy standards version to 3.9.2.

Addresses-Debian-Bug: #632169

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
diff --git a/configure b/configure
index 667845f..35dd5ce 100755
--- a/configure
+++ b/configure
@@ -823,6 +823,7 @@
 with_libiconv_prefix
 with_included_gettext
 with_libintl_prefix
+with_multiarch
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1487,6 +1488,7 @@
   --with-included-gettext use the GNU gettext library included here
   --with-libintl-prefix[=DIR]  search for libintl in DIR/include and DIR/lib
   --without-libintl-prefix     don't search for libintl in includedir and libdir
+  --with-multiarch=ARCH specify the multiarch triplet
 
 Some influential environment variables:
   CC          C compiler command
@@ -11269,6 +11271,13 @@
 
 
 
+
+# Check whether --with-multiarch was given.
+if test "${with_multiarch+set}" = set; then :
+  withval=$with_multiarch; libdir=$libdir/$withval
+root_libdir=$root_libdir/$withval
+
+fi
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether linker accepts -static" >&5
 $as_echo_n "checking whether linker accepts -static... " >&6; }
 if test "${ac_cv_e2fsprogs_use_static+set}" = set; then :