MFC r312452-r312512:

r312452-r312512:

- Use SRCTOP-relative paths to other directories instead of .CURDIR-relative ones

This simplifies pathing in make/displayed output

- Use .CURDIR:H instead of .CURDIR to simplify pathing in output, etc

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

Merge the projects/release-pkg branch to head.

This allows packaging the base system with pkg(8), including
but not limited to providing the ability to provide upstream
binary update possibilities for non-tier-1 architectures.

This merge is a requirement of the 11.0-RELEASE, and as such,
thank you to everyone that has tested the project branch.

Documentation in build(7) etc. is still somewhat sparse, but
updates to those parts will follow.

Sponsored by: The FreeBSD Foundation

Revert r284417 it is not necessary anymore

Enforce overwritting SHLIBDIR

Since METAMODE has been added, sys.mk loads bsd.mkopt.mk which ends load loading
bsd.own.mk which then defines SHLIBDIR before all the Makefile.inc everywhere.

This makes /lib being populated again.

Reported by: many

Add a ${CP} alias for copying files in the build.

Some users build FreeBSD as non-root in Perforce workspaces. By default,
Perforce sets files read-only unless they're explicitly being edited.
As a result, the -f argument must be used to cp in order to override the
read-only flag when copying source files to object directories. Bare use of
'cp' should be avoided in the future.

Update all current users of 'cp' in the src tree.

Reviewed by: emaste
MFC after: 1 week
Sponsored by: Spectra Logic

Fix spelling and wording.

Fix buildworld -DNO_CLEAN when using with Perforce, which marks files as
read-only by default, meaning files copied can't be overwritten next time.

Reviewed by: imp
Approved by: ken (mentor)

Build lib/ with WARNS=6 by default.

Similar to libexec/, do the same with lib/. Make WARNS=6 the norm and
lower it when needed.

I'm setting WARNS?=0 for secure/. It seems secure/ includes the
Makefile.inc provided by lib/. I'm not going to touch that directory.
Most of the code there is contributed anyway.

Bump the version of all non-symbol-versioned shared libraries in
preparation for 8.0-RELEASE. Add the previous version of those
libraries to ObsoleteFiles.inc and bump __FreeBSD_Version.

Reviewed by: kib
Approved by: re (rwatson)

Update the lib/expat tree for the new v2.0.1 expat import. The bsdxml.h
header is now in two parts: bsdxml.h and bsdxml_external.h, representing
the expat.h and expat_external.h headers. Updated the info on the man
page as well. Also, fixed a type-error in a printf in
sbin/ifconfig/regdomain.c that would cause a compiler warning.

Approved by: sam, phk

Bump library versions in preparation for 7.0.

Ok'd by: kan

Bump the shared library version number of all libraries that have not
been bumped since RELENG_5.

Reviewed by: ru
Approved by: re (not needed for commit check but in principle...)

Stage 3 of dynamic root support. Make all the libraries needed to run
binaries in /bin and /sbin installed in /lib. Only the versioned files
reside in /lib, the .so symlink continues to live /usr/lib so the
toolchain doesn't need to be modified.

Style.

Approved by: phk

Ok, concensus was to install libexpat under a "private brandname", and after
some deliberation the name "libbsdxml" was chosen since it conveys the two
most important attributes: "Private to FreeBSD" and "XML".

Add a skeleton man-page to give the credit and point for further
documentation. (If somebody wants to write a true mdoc manpage for
this I am sure both the eXpat people and I will be grateful).

(Still not connected to the build)

Build libexpat out of src/contrib/expat.

Not connected to the build yet.