Export of internal Abseil changes

--
38bc0644e17bf9fe4d78d3db92cd06f585b99ba7 by Andy Soffer <asoffer@google.com>:

Change benchmark to be cc_binary instead of cc_test, and fix a bug in the zipf_distribution benchmark in which arguments were passed in the wrong order.

PiperOrigin-RevId: 262227159

--
3b5411d8f285a758a1713f7ef0dbfa3518f2b38b by CJ Johnson <johnsoncj@google.com>:

Updates Simple<*>() overload to match the name schema of the others

PiperOrigin-RevId: 262211217

--
0cb6812cb8b6e3bf0386b9354189ffcf46c4c094 by Andy Soffer <asoffer@google.com>:

Removing period in trailing namespace comments.

PiperOrigin-RevId: 262210952

--
c903feae3a881be81adf37e9fccd558ee3ed1e64 by CJ Johnson <johnsoncj@google.com>:

This is a cleanup on the public header of InlinedVector to be more presentable

PiperOrigin-RevId: 262207691

--
9a94384dc79cdcf38f6153894f337ebb744e2d76 by Tom Manshreck <shreck@google.com>:

Fix incorrect doc on operator()[] for flat_hash_set

PiperOrigin-RevId: 262206962

--
17e88ee10b727af82c04f8150b6d246eaac836cb by Derek Mauro <dmauro@google.com>:

Fix gcc-5 build error

PiperOrigin-RevId: 262198236
GitOrigin-RevId: 38bc0644e17bf9fe4d78d3db92cd06f585b99ba7
Change-Id: I77cababa47ba3ee8b6cebb2c2cfc9f60a331f6b7