RFR: Added section for newcomers [v5]

[Jesper Wilhelmsson]

On Thu, 19 Nov 2020 04:32:48 GMT, Stuart Marks <smarks at openjdk.org> wrote:

>> Jesper Wilhelmsson has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   sponsor role and github username
>
> src/index.md line 29:
> 
>> 27: ### 1. Sign the OCA
>> 28: 
>> 29: Oracle is the stewards of the OpenJDK project, and owns the Java brand. In order to make your patch available for review you must first sign the [Oracle Contributor Agreement](https://www.oracle.com/technical-resources/oracle-contributor-agreement.html) (OCA). This agreement gives Oracle and you as a contributor joint copyright interests in the code. You will retain your copyright while also granting those rights to Oracle.
> 
> OK, now it's American/British usage (whether a company name is singular or plural) vs. noun-verb agreement. I thought "Oracle are the stewards..." was ok for British usage (but as an American, what do I know). I'm also OK with making "Oracle" singular but then "steward" should be singular too. That is, "Oracle is the steward of the OpenJDK project, ...."

Fixed.

> src/index.md line 65:
> 
>> 63: * **Hidden constraints and assumptions**. Many sections of code have constraints and assumptions that aren't necessarily visible at first glance. This might preclude certain changes, even those that might seem obvious.
>> 64: 
>> 65: * **Stability and quality**. The JDK is used by millions of developers and as a widely deployed commercial product, it is held to a high standard of quality. Changes should include tests where practical, and core tests should pass at all times. The value of the change should outweigh the risk of introducing a bug, or performance regression.
> 
> Remove comma before "or performance regression." But yes, mentioning performance is very important.

Fixed.

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PR: https://git.openjdk.java.net/guide/pull/38