- Copy stable/10 (r259064) to releng/10.0 as part of the
10.0-RELEASE cycle.
- Update __FreeBSD_version [1]
- Set branch name to -RC1

[1] 10.0-CURRENT __FreeBSD_version value ended at '55', so
start releng/10.0 at '100' so the branch is started with
a value ending in zero.

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

Merge r257633:

- Add manual pages for capability rights (rights(4)), cap_rights_init(3)
family of functions and cap_rights_get(3) function.
- Update remaining Capsicum-related manual pages.

Sponsored by: The FreeBSD Foundation
Reviewed by: bdrewery
Approved by: re (glebius)

- Add manual pages for capability rights (rights(4)), cap_rights_init(3)
family of functions and cap_rights_get(3) function.
- Update remaining Capsicum-related manual pages.

Reviewed by: bdrewery
MFC after: 3 days