RFR: JDK-8196875 Update run-test instructions for TEST_MODE

Fri Jan 31 14:08:28 UTC 2020

Looks good.

/Erik

On 2020-01-31 01:37, Magnus Ihse Bursie wrote:
> As reported by Martin Buchholz <martinrb at google.com>:
>
> #### TEST_MODE
> The test mode (`-agentvm`, `-samevm` or `-othervm`).
>
> but TEST_MODE=-agentvm is rejected - it must be TEST_MODE=agentvm.
>
> and Jon Gibbons noted:
> .. and samevm mode no longer exists.
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8196875
> WebRev: 
> http://cr.openjdk.java.net/~ihse/JDK-8196875-update-test-readme-for-TEST_MODE/webrev.01 
>