[8u20] RFR: 8042440: awt_Plugin.h no longer needed

[David DeHaven]

In my haste I forgot to post to awt-dev...

Can someone please review this backport to 8u? The differences are trivial from the 9 changes.

-DrD-

> 
> Please review the backport of JDK-8042440. The changes are identical to the JDK9 changes except for exactly one line:
> 
> $ diff -Narup ~/Desktop/8042440-{8u,9}
> @@ -143,7 +143,7 @@ diff --git a/src/solaris/native/sun/awt/
> -
> -
> -#define REFLECT_VOID_FUNCTION(name, arglist, paramlist)                 \
> --typedef name##_type arglist;                                            \
> +-typedef void name##_type arglist;                                       \
> -void name arglist                                                       \
> -{                                                                       \
> -    static name##_type *name##_ptr = NULL;                              \
> 
> It seems someone added a void return type to the function being deleted, which resulted in the patch conflict, the end result is the same, all that code is deleted.
> 
> 
> JBS Issue:
> https://bugs.openjdk.java.net/browse/JDK-8042440
> 
> JDK 9 review:
> http://mail.openjdk.java.net/pipermail/awt-dev/2014-May/007671.html
> 
> Existing JDK9 patch:
> http://hg.openjdk.java.net/jdk9/client/jdk/rev/75206fa5a43e
> 
> JDK 8u-dev webrev:
> http://cr.openjdk.java.net/~ddehaven/8042440/8u-bp/
> 
> -DrD-
>