Merge branch 'PHP-5.3' into PHP-5.4

diff --cc Zend/zend_execute.c
index 276ad382fb192a0e7cc58aa60efe52c6eece41b5,16dc08e5020c90684963d6a37d4bc338cad89a77..ff9c2d0de2ae36da66ea048f7b5ef7be9bf2d91e
--- 1/Zend/zend_execute.c
--- 2/Zend/zend_execute.c
+++ b/Zend/zend_execute.c
@@@ -1145,8 -937,11 +1145,12 @@@ convert_to_array
                                        zend_error_noreturn(E_ERROR, "[] operator not supported for strings");
                                }
  
+                               if (type != BP_VAR_UNSET) {
+                                       SEPARATE_ZVAL_IF_NOT_REF(container_ptr);
+                               }
+ 
                                if (Z_TYPE_P(dim) != IS_LONG) {
 +
                                        switch(Z_TYPE_P(dim)) {
                                                /* case IS_LONG: */
                                                case IS_STRING: