Split transfer data because of the size limit of FileChannelImpl

[wecharyu]

What changes

• Split the data that need to transfer into pieces with a maximum size Integer.MAX_VALUE
• Add a unit test to cover the case of transferring large data (more than 2GB)

Why needs these changes

In the underlying FileChannelImpl, it can transfer at most 2 GB data at a time, which will cause an error if we transfer more than 2 GB data directly:

tape/tape/src/main/java/com/squareup/tape2/QueueFile.java

Lines 462 to 464 in 445cd3f

	if (channel.transferTo(headerLength, count, channel) != count) {
	throw new AssertionError("Copied insufficient number of bytes!");
	}

[JakeWharton]

Change looks good. I need to update our CI which I can't do until next week. After that I'll rebase your changes to ensure they pass and merge.

[wecharyu]

Gentle Ping @JakeWharton, btw do we need to release a new version for this fix?

[JakeWharton]

Forgot about it. I'll try again next week.

[wecharyu]

Hi @JakeWharton please try this PR this week. Thanks a lot :)

[JakeWharton]

I have some other work and then I'm going on vacation. Earliest I'll get to this library is in September.

[wecharyu]

OHOK thank you, have a good vacation~

[elevenfive]

Hey @JakeWharton just a re-ping, maybe this got lost in the shuffle...

[wecharyu]

Hi @JakeWharton, please help check this PR at your convenience.

[elevenfive]

Yearly re-ping? Or close the issue?