Cleaned up configure.ac and added anthy.i in tarball (#1571)

Patch is provided by galtgendo [at] gmail [dot] com
setup: Look like a modal dialog when under gnome-control-center

In order to look better integrated when launched from
gnome-control-center we should look like a modal dialog.
Cleaned up configure.ac (#1584)
Fixed to convert yen to U+30FC in kana mode. (#1596)
Removed deprecated GObject.
Fixed unichr range (#957222)
Updated copyright.
Enabled Latin mode with Shift key.
Updated translations.
Update French translation
Removed fuzzy in fr.po.
Let Latin mode return FALSE (#1058)
Changed GOBJECT_INTROSPECTION_CHECK to GOBJECT_INTROSPECTION_REQUIRE (#1620)
Added Zenkaku_Hankaku to on-off keys.
Sent IBus.PropState.UNCHECKED for ibus 1.5.
Released 1.5.1

Cleaned up configure.ac and added anthy.i in tarball (#1571)
setup: Look like a modal dialog when under gnome-control-center
Fixed to convert yen to U+30FC in kana mode. (#1596)
Removed deprecated GObject.
Fixed unichr range (#957222)
Enabled Latin mode with Shift key.
Let Latin mode return FALSE (#1058)
Changed GOBJECT_INTROSPECTION_CHECK to GOBJECT_INTROSPECTION_REQUIRE (#1620)
Added Zenkaku_Hankaku to on-off keys.
Sent IBus.PropState.UNCHECKED for ibus 1.5.