MFC r319027,r319028,r319029,r319030,r319031,r319033,r319034,r319035,r319036,r319037,r319038,r319039,r319040,r319041,r319042,r319043,r319044,r319045,r319046:

r319027:

lib/libc/tests/nss: use calloc appropriately

The pattern used prior to this commit was `calloc(1, n * sizeof(type))`;
the pattern that should be used however is `calloc(n, sizeof(type))`.

r319028:

Sort make variables to suit style.Makefile(5)

This is being done prior to functional changes.

r319029:

Staticize functions and remove unused variables to aid with bumping WARNS

r319030:

Fix -Wsign-compare warnings

r319031:

getusershell_test: staticize run_tests(..) to fix warnings

r319033:

getserv_test: fix -Wsign-compare and -Wmissing-prototypes warnings

r319034:

getaddrinfo_test: fix -Wsign-compare warnings

r319035:

getrpc_test: fix -Wmissing-prototypes and -Wsign-compare warnings

r319036:

getproto_test: fix -Wmissing-prototypes and -Wsign-compare warnings

r319037:

getaddrinfo_test: mark unused function parameters __unused to fix -Wunused
warnings

r319038:

getusershell_test: mark mdata parameter in compare_usershell __unused

r319039:

getserv_test: mark unused parameters __unused to fix corresponding
warnings

r319040:

getrpc_test: fix -Wunused warnings

- Mark unused function parameters unused.
- Remove an unused function prototype.

r319041:

getproto_test: fix -Wunused warnings

Mark unused parameters __unused in functions.

r319042:

gethostby_test: fix multiple warning types

- Fix -Wmissing-declaration warning by staticizing run_tests.
- Fix -Wsign-compare warnings by casting size_t types to int
for comparisons.

Reindent some of the code in sdump_hostent(..) to accomodate the
overall changes.

r319043:

getpw_test: fix -Wunused warnings

- Mark unused parameters __unused.
- Put dump_passwd under DEBUG as it's only used in that case.

r319044:

getgr_test: fix -Wunused warnings

r319045:

Fix -Wunused and -Wshadow warnings

r319046:

Fix a -Wunused-but-set-variable warning reported by gcc 6.3.0

Copy head@r302406 to stable/11 as part of the 11.0-RELEASE cycle.
Prune svn:mergeinfo from the new branch, as nothing has been merged
here.

Additional commits post-branch will follow.

Approved by: re (implicit)
Sponsored by: The FreeBSD Foundation

Integrate tools/regression/lib/libc/nss into the FreeBSD test suite as
lib/libc/tests/nss

- Convert the testcases to ATF
- Do some style(9) cleanups:
-- Sort headers
-- Apply indentation fixes
-- Remove superfluous parentheses
- Explicitly print out debug printfs for use with `kyua {debug,report}`; for
items that were overly noisy, they've been put behind #ifdef DEBUG
conditionals
- Fix some format strings

MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

Clean up trailing whitespace

MFC after: 1 week

Restore "all rights reserved" (spelled correctly). This was actually part of the standard text of the license which I did not realize prior.

Approved by: bushman

Remove lines declaring "All rights reserved" or similar comments: they
are not true as the files are actually under the BSD-2 license

Approved by: bushman

Committing regression tests for all implemented nsswitch databases.
Detailed description and instructions are in the README file.
This work had been basically done during GSoC 2006.

Approved by: brooks (mentor)