RFR: 8265400: Update to gcc 10.3 on Linux

Thu Apr 29 13:01:56 UTC 2021

On Tue, 27 Apr 2021 21:30:25 GMT, Kevin Rushforth <kcr at openjdk.org> wrote:

> This patch updates the compiler to gcc 10.3 on Linux, in order to match JDK 17 -- see [JDK-8265373](https://bugs.openjdk.java.net/browse/JDK-8265373).
> 
> I ran a full build and test, including media and WebKit.

Marked as reviewed by jvos (Reviewer).

works fine. Note: the entry says "gcc10.3.0-OL6.4+1.0" but I tested using the gcc10.3.0 on Ubuntu (18.04)

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PR: https://git.openjdk.java.net/jfx/pull/481