Integrated: 8259485: Document need for short paths when building on Windows

[liach]

On Tue, 12 Jan 2021 06:46:33 GMT, liach <github.com+7806504+liach at openjdk.org> wrote:

> Though this content seems simple, it would be extremely frustrating to newcomers, especially when the build stalls at "cannot find valid visual studio installation" for no clear reason in logs at all.

This pull request has now been integrated.

Changeset: 2243a170
Author:    liach <liach at users.noreply.github.com>
Committer: Aleksey Shipilev <shade at openjdk.org>
URL:       https://git.openjdk.java.net/jdk/commit/2243a170
Stats:     15 lines in 2 files changed: 15 ins; 0 del; 0 mod

8259485: Document need for short paths when building on Windows

Reviewed-by: erikj, shade

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PR: https://git.openjdk.java.net/jdk/pull/2043