A function macro named E clashes with internal boost definitions.  Rearrange
the order of header inclusion so that affected boost headers are included
before monotone defines the macro.

Also, stop bundling boost/circular_buffer, which is available in current
versions of boost. From Fedora.

Index: src/project.cc
--- src/project.cc.orig
+++ src/project.cc
@@ -8,9 +8,9 @@
 // PURPOSE.
 
 #include "base.hh"
-#include "vector.hh"
 
 #include "cert.hh"
+#include "vector.hh"
 #include "database.hh"
 #include "date_format.hh"
 #include "project.hh"