Move regexp implementation into its own folder.

src/regexp/ppc/regexp-macro-assembler-ppc.h

Index: src/regexp/ppc/regexp-macro-assembler-ppc.h
diff --git a/src/ppc/regexp-macro-assembler-ppc.h b/src/regexp/ppc/regexp-macro-assembler-ppc.h
similarity index 97%
rename from src/ppc/regexp-macro-assembler-ppc.h
rename to src/regexp/ppc/regexp-macro-assembler-ppc.h
index 051681bf0635644a79677dad96082bfb64d2ef5f..f47e21778cbcc1f5a37e873552fde681469744d9 100644
--- a/src/ppc/regexp-macro-assembler-ppc.h
+++ b/src/regexp/ppc/regexp-macro-assembler-ppc.h
@@ -2,12 +2,12 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef V8_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
-#define V8_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
+#ifndef V8_REGEXP_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
+#define V8_REGEXP_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
 
 #include "src/macro-assembler.h"
 #include "src/ppc/assembler-ppc.h"
-#include "src/ppc/frames-ppc.h"
+#include "src/regexp/regexp-macro-assembler.h"
 
 namespace v8 {
 namespace internal {
@@ -210,4 +210,4 @@ const RegList kRegExpCalleeSaved =
 }
 }  // namespace v8::internal
 
-#endif  // V8_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_
+#endif  // V8_REGEXP_PPC_REGEXP_MACRO_ASSEMBLER_PPC_H_