Update contrib/expat by merging from the vendor branch.
Update expat_config.h manually, using
make -C /usr/ports/textproc/expat2 configure
as a baseline.
MFC after: 1 month
Relnotes: yes
Security: yes; see contrib/expat/Changes since 2.2.0
Sponsored by: Dell EMC Isilon
used within FreeBSD base system only, and discourage user applications
from using it. User applications should use the expat version from the
ports/package collection.
Reviewed by: simon (earlier version)
MFC after: 2 weeks
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
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)
