Make some hash/equals operators inline.

Namely class descriptor hash/equals in ClassTable and
string hash/equals in InternTable.

This should reduce reliance on ThinLTO for performance.

Test: m test-art-host-gtest
Test: testrunner.py --host --optimizing
Bug: 179799979
Bug: 179837605
Change-Id: Ie513b2312d30e1b52efefd705a26d13035789e4a
diff --git a/runtime/gc/space/image_space_test.cc b/runtime/gc/space/image_space_test.cc
index 6208a73..0b22a6f 100644
--- a/runtime/gc/space/image_space_test.cc
+++ b/runtime/gc/space/image_space_test.cc
@@ -24,7 +24,7 @@
 #include "class_linker.h"
 #include "dexopt_test.h"
 #include "dex/utf.h"
-#include "intern_table.h"
+#include "intern_table-inl.h"
 #include "noop_compiler_callbacks.h"
 #include "oat_file.h"