Move regexp implementation into its own folder.

src/regexp/jsregexp-inl.h

Index: src/regexp/jsregexp-inl.h
diff --git a/src/jsregexp-inl.h b/src/regexp/jsregexp-inl.h
similarity index 94%
rename from src/jsregexp-inl.h
rename to src/regexp/jsregexp-inl.h
index 1ab70b8c4b88dee74df03966478d46b86052e051..118f3dba9ca906b277135e7bfa0881518c11587d 100644
--- a/src/jsregexp-inl.h
+++ b/src/regexp/jsregexp-inl.h
@@ -3,14 +3,14 @@
 // found in the LICENSE file.
 
 
-#ifndef V8_JSREGEXP_INL_H_
-#define V8_JSREGEXP_INL_H_
+#ifndef V8_REGEXP_JSREGEXP_INL_H_
+#define V8_REGEXP_JSREGEXP_INL_H_
 
 #include "src/allocation.h"
 #include "src/handles.h"
 #include "src/heap/heap.h"
-#include "src/jsregexp.h"
 #include "src/objects.h"
+#include "src/regexp/jsregexp.h"
 
 namespace v8 {
 namespace internal {
@@ -80,4 +80,4 @@ int32_t* RegExpImpl::GlobalCache::LastSuccessfulMatch() {
 
 } }  // namespace v8::internal
 
-#endif  // V8_JSREGEXP_INL_H_
+#endif  // V8_REGEXP_JSREGEXP_INL_H_