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/compiler/optimizing/optimizing_compiler.h b/compiler/optimizing/optimizing_compiler.h
index d8cea30..6ee9c70 100644
--- a/compiler/optimizing/optimizing_compiler.h
+++ b/compiler/optimizing/optimizing_compiler.h
@@ -17,8 +17,8 @@
 #ifndef ART_COMPILER_OPTIMIZING_OPTIMIZING_COMPILER_H_
 #define ART_COMPILER_OPTIMIZING_OPTIMIZING_COMPILER_H_
 
+#include "base/globals.h"
 #include "base/mutex.h"
-#include "globals.h"
 
 namespace art {