Merge tag auto-value-1.7.3^ into master

Merge the parent commit of auto-value-1.7.3 into master.  The commit
of the auto-value-1.7.3 tag is not on a branch so not replicated, but
it just sets the version number.

Bug: 158870037
Test: m checkbuild
Change-Id: I1d88f1443d71b630efda822b04355c3b3fb20d59