pseudo: Update for arm host and memleak fixes/cleanup

Pulls in:

makewrappers: support architecture-overrides in wrapper modifiers
makewrappers: fix Python 2 hangover
Fix some memory leaks
Disable deprecated function warnings
Silence switch block warnings
pseudo_util: don't overrun strings when looking for keys

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>