* added HaikuBuildCompatibility.h to the src/build/* files that are built as
part of the tools we need to build Haiku.
* Changed HaikuBuildCompatibility.h so that it does not define the things
that are already in the build headers.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@24147 a95241bf-73f2-0310-859d-f6bbb57e9c96