Indicate units of HttpClient properties

[cowwoc]

Jetty version(s) 11.0.1

Enhancement Description

For example, I assume that HttpClient.setRequestBufferSize() and HttpClient.setResponseBufferSize() refer to a value in bytes but it would be helpful for the Javadoc to state this explicitly. Alternatively, rename the parameter name from say requestBufferSize to requestBufferSizeInBytes.

[sbordet]

Care to contribute a pull request? Against jetty-10.0.x, we will merge forward. Thanks!

[cowwoc]

Done

[joakime]

Might want to link the PR here.
Looks like you went above and beyond with PRs for all three active branches.
We really only need 10.0.x and we'll merge forward.

[cowwoc]

@joakime Here you go: #8728

Sorry for the other PRs. I'll close the extra ones.