xserver 21.1.15

Alan Coopersmith (1):

• dix-config.h: add HAVE_SOCKLEN_T definition

Eric Curtin (1):

• config: add a quirk for Apple Silicon appledrm

Joaquim Monteiro (2):

• os: Fix assignment with incompatible pointer type
• os: Fix siHostnameAddrMatch in the case where h_addr isn't defined

Matt Turner (3):

• hw/xfree86: Fix -Wmissing-prototypes warnings
• hw/xfree86: Fix -Wincompatible-pointer-types sbus compile failure
• xserver 21.1.15