Clean up include paths

Remove runtime/globals.h and make clients point to the right globals.h
(libartbase/base/globals.h).  Also make within-libartbase includes
relative rather than using base/, etc.

Bug: 22322814
Test: make -j 40 checkbuild
Change-Id: I99de63fc851d48946ab401e2369de944419041c7
diff --git a/libartbase/base/mem_map_test.cc b/libartbase/base/mem_map_test.cc
index 3adbf18..4408f55 100644
--- a/libartbase/base/mem_map_test.cc
+++ b/libartbase/base/mem_map_test.cc
@@ -21,9 +21,9 @@
 #include <memory>
 #include <random>
 
-#include "base/memory_tool.h"
-#include "base/unix_file/fd_file.h"
 #include "common_runtime_test.h"
+#include "memory_tool.h"
+#include "unix_file/fd_file.h"
 
 namespace art {