[oe] [meta-oe][PATCH] Replace EXCLUDE_FROM_WORLD_libc-musl = "1" with COMPATIBLE_HOST_libc-musl = 'null'

[Adrian Bunk]

Sorry for the confusing submission, but these were two different patches 
doing a similar change in different layers that should both be applied.

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed