doc: Remove incorrect docmentation

The documentation was about wl_client_get_object(), not about
wl_resource_get_client().

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
doc: Fix spelling of parameters

Signed-off-by: Jonas Ådahl <jadahl@gmail.com>
client: Handle EINTR in wl_display_dispatch_queue()

Restart the poll() if we take a signal.  This is easily triggered in
an application that ends up blocking in eglSwapBuffers(), and causes EGL
to fail to allocate a back buffer.
configure.ac: Bump version to 1.3.91 for the alpha release