package/weston: bump version

Bump to the recently -released 1.5.0.

Remove existing patches, they are no longer needed:
  - weston-0000-compositor-rpi-fix-input-initialization.patch was a
    back-port of an upstream fix, so no longer needed,
  - weston-0003-dont-build-tests.patch no longer applies due to a
    complete rewrite of Makefile.am, but it seems tests now build fine
    even without EGL support: there is code in the Makefile.am to
    explicitly handle that case

Add a new patch from upstream to avoid a use-after-free situation.

So, it's no longer needed to autoreconf.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>