- Copy stable/10@296371 to releng/10.3 in preparation for 10.3-RC1
builds.
- Update newvers.sh to reflect RC1.
- Update __FreeBSD_version to reflect 10.3.
- Update default pkg(8) configuration to use the quarterly branch.

Approved by: re (implicit)

Copy head (r256279) to stable/10 as part of the 10.0-RELEASE cycle.

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

mdoc: order prologue macros consistently by Dd/Dt/Os

Although groff_mdoc(7) gives another impression, this is the ordering
most widely used and also required by mdocml/mandoc.

Reviewed by: ru
Approved by: philip, ed (mentors)

- This code was intially obtained from NetBSD, but it's missing licence
statement. Add the one from the current NetBSD version.
- Also bump a date to reflect my content changes I have done in previous
revision

Approved by: imp
MFC after: 3 days

- Add description about a missing return value

PR: docs/75995
Submitted by: Tarc <tarc@po.cs.msu.su>
MFC after: 3 days

Sort sections.

mdoc(7): Use the new feature of the .In macro.

Document the fact that hdestory calls free on the keys added with
hsearch(.., ENTER). Make the example reflect this.

PR: 49951
Submitted by: Peter Jeremy <peterjeremy@optushome.com.au>

mdoc(7) police: eliminate -ww warnings.

Add new, from scratch implementation of hsearch() et al that actually works.

Obtained from: NetBSD
MFC after: 1 month