The libintl check is broken in meson.build. Patched it and added back
the gettext build dependencies. Avoids the proxy-intl thing that glib2
likes to use.

Updated configure options.

Refreshed patches.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

* allows building as mips16 (fixes broken mips16/32 mixed static linking)
* add some static link related flags to reduce target binary size

Signed-off-by: Andy Walsh <andy.walsh44+github@gmail.com>