[OE-core] Getting "File name too long" errors in warrior for sstate-cache names

[Mike Looijmans]

Starting with warrior build, I'm getting build fails due to "File name too 
long" in sstate-cache filenames. This is probably related to having long names 
for machines, but this did not happen in previous releases. For example:

OSError: [Errno 36] File name too long: 
'/mnt/.../sstate-cache/52/sigtask.9u_r4yv2' -> 
'/mnt/.../sstate-cache/52/sstate:u-boot-xlnx:topic_miamilite_florida_test_xc7z010-oe-linux-gnueabi:v2019.01-xilinx-v2019.1+gitAUTOINC+d895ac5e94:r0:topic_miamilite_florida_test_xc7z010:3:52cb29cef3922da53a752f38e9bbfdef878af51813dc095d9c1451d572844f93_prepare_recipe_sysroot.tgz.siginfo'


What can I do about this? There's no hint in the error message and searching 
for the message text doesn't show much except issues with crypto filesystems, 
which doesn't apply. The filesystem is just plain ext4.