compatibility relation to the official Haiku distribution. "official"
is for the official Haiku distribution itself, "compatible" for Haiku
Compatible (tm) distros, and "default" for all others (the default value
for the option). The build system variable HAIKU_DISTRO_COMPATIBILITY is
defined accordingly, and one of the
HAIKU_DISTRO_COMPATIBILITY_{OFFICIAL,COMPATIBLE,DEFAULT} macros is
defined for source code and rdefs.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21177 a95241bf-73f2-0310-859d-f6bbb57e9c96