[PATCH] 4741726: allow Object += String

[Michael Bailey]

This is a patch to address a change from JLS 2 to JLS 3 in section
15.26.2 where this statement was removed:

"All compound assignment operators require both operands to be of
primitive type, except for +=, which allows the right-hand operand to
be of any type if the left-hand operand is of type String."


Object x = "Hi ";
String i = " world";
x += i;     // This should compile under JLS3

Neal Gafter pointed out the spec change and Alex Buckley confirmed
that it was a javac bug.

Attached is a patch that removes the corresponding check.
There should probably be a test put into the TCK.


Michael Bailey
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