Remove the use of relative paths. A header at foo/bar.h could be included by
files under foo/ with "bar.h", but would be included everywhere else as
"foo/bar.h". Adjust so that every include references such a header with the
latter form.
Signed-off-by: Robert Escriva <rescriva@dropbox.com>
For files that required flow.h, and only got it through actorcompiler.h,
their version of flow.h would have the actorcompiler #defines defined.
Then, if it included a STL/boost file, the same breakage would result.
This needs to not happen, so the include of flow.h in actorcompiler.h
was removed.