gettext: upgrade to 0.19.4

gettext: upgrade to 0.19.4

* gettext:
  - Update parallel.patch, we only need a part of it.

* gettext-minimal-native:
  - Update related files from gettext-native.
  - Remove Makevars.template, we didn't use it.
  - Remove iconv-m4-remove-the-test-to-convert-euc-jp.patch (can be
    reverse applied).
  - Update the COPYING (1995 - 2014).

* About upgrade gettext-minimal-native (for future's upgrade):
  - Build gettext-native
  - Copy gettext-runtime/po/Makefile.in.in, build-aux/config.rpath and
    gettext-runtime/po/remove-potcdate.sin from gettext-native.
  - Update COPYING when needed (usually update the year), do not copy
    the whole COPYING file from gettext-native.
  - Go to gettext-native's ${S}/gettext-runtime/m4:
    > Remove lt*.m4 and libtool.m4
    > copy lib-ld.m4 lib-link.m4 lib-prefix.m4 from ${S}/gettext-runtime/m4/
    > tar czvf /path/to/aclocal.tgz *.m4

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>