MFC r312332,r312446,r312451:

r312332:

Use SRCTOP where possible and use :H to manipulate .CURDIR to get rid of
unnecessarily long relative path .PATH values with make

r312446 (by emaste):

libc: remove reference to nonexistent lib/locale directory

As far as I can tell this was introduced in r72406 and updated in several
subsequent revisions, but the lib/locale directory it referenced never
existed.

r312451:

Replace dot-dot relative pathing with SRCTOP-relative paths where possible

This reduces build output, need for recalculating paths, and makes it clearer
which paths are relative to what areas in the source tree. The change in
performance over a locally mounted UFS filesystem was negligible in my testing,
but this may more positively impact other filesystems like NFS.

LIBC_SRCTOP was left alone so Juniper (and other users) can continue to
manipulate lib/libc/Makefile (and other Makefile.inc's under lib/libc) as
include Makefiles with custom options.

Discussed with: marcel, sjg

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

Add -static to CFLAGS to unbreak the tests by using a libc.a with
the xlocale private symbols exposed which aren't exposed publicly
via the DSO

PR: 191354
MFC after: 1 week
Sponsored by: EMC / Isilon Storage Division

Fix -Wformat issues and minor whitespace issues in surrounding areas

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

split.ih:
- Create automatically generated include header for split.c

main.c:
- Use function definitions from debug.ih and split.ih instead of externs

Sponsored by: EMC / Isilon Storage Division

Use `==` instead of `=` in the function comment above split(..) so mkh -p
exposes split(..).

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

Use ANSI C function prototypes/definitions instead of K&R style ones

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

Add missing headers and sort #includes per style(9)

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

- Use ANSI C function prototypes/definitions instead of K&R style ones
- Add a missing return type for main(..)

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

Fix -Wformat warnings by using the correct format qualifiers

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

Add two test cases from PR 130504.
An additional one coming from http://www.research.att.com/~gsf/testregex/
was not added; at some point the entire AT&T regression test harness
should be imported here.
But that would also mean commitment to fix the uncovered errors.

PR: 130504
Submitted by: Chris Kuklewicz

getopt(3) returns -1, not EOF.

Test cases for back references.

Obtained from: OpenBSD

Update paths to reg*.c and regex2.h. Add a target to build regex.h.

Update for removal of cclass.h. Trim some useless targets. Invoke mkh
with "sh mkh" so it works if the script is not executable.

Update for recent changes to struct re_guts. Disable printing the contents
of OANYOF sets for the moment.

Remove unused files.

Fix the style of the SCM ID's.
I believe have made all of libc .h's as consistent as possible.

Fix the style of the SCM ID's.
I believe have made all of libc .c's as consistent as possible.

Back out last commit (rev 1.2). I thought I caught this file in time
when deP'ing. But I guess not.

Remove __P() usage.

Remove 'register' keyword.

Actually make it so this Makefile can build grot.

Add a test case for one of the bugs found on the new additions to
regex(3).

Spencer's regex(3) test code.

Obtained from: BSD/OS