Merge up to 8597 to experimental/gc from the bleeding edge.

src/d8.js

Index: src/d8.js
===================================================================
--- src/d8.js	(revision 8618)
+++ src/d8.js	(working copy)
@@ -977,9 +977,14 @@
     // specification it is considered a function break point.
     pos = target.indexOf(':');
     if (pos > 0) {
-      type = 'script';
       var tmp = target.substring(pos + 1, target.length);
       target = target.substring(0, pos);
+      if (target[0] == '/' && target[target.length - 1] == '/') {
+        type = 'scriptRegExp';
+        target = target.substring(1, target.length - 1);
+      } else {
+        type = 'script';
+      }
 
       // Check for both line and column.
       pos = tmp.indexOf(':');
@@ -1984,6 +1989,9 @@
           if (breakpoint.script_name) {
               result += ' script_name=' + breakpoint.script_name;
           }
+          if (breakpoint.script_regexp) {
+              result += ' script_regexp=' + breakpoint.script_regexp;
+          }
           result += ' line=' + (breakpoint.line + 1);
           if (breakpoint.column != null) {
             result += ' column=' + (breakpoint.column + 1);