RFR: 8285452: Add a new test library API to replace a file content using FileUtils.java [v3]

[Sibabrata Sahoo]

On Fri, 22 Apr 2022 14:35:14 GMT, Sibabrata Sahoo <ssahoo at openjdk.org> wrote:

>> A new API to support replacing selective lines with desired content.
>
> Sibabrata Sahoo has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Update FileUtils.java

I will do a small change in method signature patch(Path path, int fromLine, int toLine, List<String> from, String to) where the argument "List<String> from" to be "String from". Also a new open Test will be added into this change-set.

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PR: https://git.openjdk.java.net/jdk/pull/8360