Make the RegExp.prototype object be a RegExp object.

test/es5conform/es5conform.status

Index: test/es5conform/es5conform.status
diff --git a/test/es5conform/es5conform.status b/test/es5conform/es5conform.status
index e35acfcb1381af89ec0d83e1fee9e28981259ac3..65bc50ba22c36f631f8e8a19b81884480d366adb 100644
--- a/test/es5conform/es5conform.status
+++ b/test/es5conform/es5conform.status
@@ -96,9 +96,6 @@ chapter15/15.2/15.2.3/15.2.3.4/15.2.3.4-4-7: FAIL_OK
 # SUBSETFAIL
 chapter15/15.2/15.2.3/15.2.3.4/15.2.3.4-4-11: FAIL_OK
 
-# We do not implement all methods on RegExp.
-chapter15/15.2/15.2.3/15.2.3.4/15.2.3.4-4-13: FAIL
-
 # SUBSETFAIL
 chapter15/15.2/15.2.3/15.2.3.4/15.2.3.4-4-14: FAIL_OK
 
@@ -191,22 +188,6 @@ chapter15/15.5/15.5.4/15.5.4.20/15.5.4.20-4-10: FAIL
 chapter15/15.5/15.5.4/15.5.4.20/15.5.4.20-4-18: FAIL
 chapter15/15.5/15.5.4/15.5.4.20/15.5.4.20-4-34: FAIL
 
-# RegExp.prototype is not of type RegExp - we are bug compatible with JSC.
-chapter15/15.10/15.10.6/15.10.6: FAIL_OK
-
-# We do not have the properties of a RegExp instance on RegExp.prototype.
-# The spec says we should - but we are currently bug compatible with JSC.
-chapter15/15.10/15.10.7/15.10.7.1/15.10.7.1-1: FAIL_OK
-chapter15/15.10/15.10.7/15.10.7.1/15.10.7.1-2: FAIL_OK
-chapter15/15.10/15.10.7/15.10.7.2/15.10.7.2-1: FAIL_OK
-chapter15/15.10/15.10.7/15.10.7.2/15.10.7.2-2: FAIL_OK
-chapter15/15.10/15.10.7/15.10.7.3/15.10.7.3-1: FAIL_OK
-chapter15/15.10/15.10.7/15.10.7.3/15.10.7.3-2: FAIL_OK
-chapter15/15.10/15.10.7/15.10.7.4/15.10.7.4-1: FAIL_OK
-chapter15/15.10/15.10.7/15.10.7.4/15.10.7.4-2: FAIL_OK
-chapter15/15.10/15.10.7/15.10.7.5/15.10.7.5-1: FAIL_OK
-chapter15/15.10/15.10.7/15.10.7.5/15.10.7.5-2: FAIL_OK
-
 ##############################################################################
 # Unimplemented parts of strict mode
 # Setting expectations to fail only so that the tests trigger as soon as