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

Remove casts from {c,m,re}alloc() and simplify sizeof().

MFC after: 1 week

Explain to the compiler why the aliasing we're doing is OK.

MFC after: 1 week

Fix a large number of signed - unsigned comparison warnings.

MFC after: 1 week

#include cleanup

MFC after: 1 week

Reduce code duplication: use calloc instead of allocing and memset
afterward.

Approved by: bushman

Forced commit to note repocopy:

The files were copied in order to rename cached to nscd.

Approved by: re (kensmith), brooks (mentor)

- Renaming repocopied cached to nscd

Approved by: re (kensmith), brooks (mentor)

- Extend the nsswitch to support Services, Protocols and Rpc
databases.
- Make nsswitch support caching.

Submitted by: Michael Bushkov <bushman__at__rsu.ru>
Sponsored by: Google Summer of Code 2005