Revert "Revert "Upgrade to 5.0.71.48"" DO NOT MERGE

This reverts commit f2e3994fa5148cc3d9946666f0b0596290192b0e,
and updates the x64 makefile properly so it doesn't break that
build.

FPIIM-449

Change-Id: Ib83e35bfbae6af627451c926a9650ec57c045605
(cherry picked from commit 109988c7ccb6f3fd1a58574fa3dfb88beaef6632)
diff --git a/src/runtime/runtime-regexp.cc b/src/runtime/runtime-regexp.cc
index 138b4dc..df86aa8 100644
--- a/src/runtime/runtime-regexp.cc
+++ b/src/runtime/runtime-regexp.cc
@@ -492,7 +492,7 @@
     }
   }
 
-  RegExpImpl::GlobalCache global_cache(regexp, subject, true, isolate);
+  RegExpImpl::GlobalCache global_cache(regexp, subject, isolate);
   if (global_cache.HasException()) return isolate->heap()->exception();
 
   int32_t* current_match = global_cache.FetchNext();
@@ -568,7 +568,7 @@
     }
   }
 
-  RegExpImpl::GlobalCache global_cache(regexp, subject, true, isolate);
+  RegExpImpl::GlobalCache global_cache(regexp, subject, isolate);
   if (global_cache.HasException()) return isolate->heap()->exception();
 
   int32_t* current_match = global_cache.FetchNext();
@@ -876,7 +876,7 @@
     }
   }
 
-  RegExpImpl::GlobalCache global_cache(regexp, subject, true, isolate);
+  RegExpImpl::GlobalCache global_cache(regexp, subject, isolate);
   if (global_cache.HasException()) return isolate->heap()->exception();
 
   // Ensured in Runtime_RegExpExecMultiple.