Rename the krb5int_buf_ family of functions to use the k5_ prefix for
brevity.  Reformat some k5buf implementation code to match current
practices.

Add k5-int.h static functions to duplicate byte ranges, optionally
with a trailing zero byte, and set an error code like k5alloc does.
Use them where they would shorten existing code.

Mostly this gets rid of the trailing space on line 2 after
bb76891f5386526bdf91bc790c614fc9296cb5fa.

Since there is no overlap between the clpreauth and kdcpreauth
interface declarations, there's no particular reason to combine them
into one header.  For backward compatibility and convenience, leave
behind a preauth_plugin.h which includes both.

Fix style issues in kerrs.c and errors.c.  Rename error handling
functions to use shorter k5_ prefix.  Eliminate an inoperable
krb5int_set_error() call in gic_opte_alloc and convert the other
call to use krb5_set_error_message().

Add entries to OBJS and SRCS as well as STLIBOBJS.

Use KRB5_CALLCONV at function definition as well as declaration.

Declare missing variable in _WIN32-conditional code.

ticket: 7479 (new)
tags: pullup
target_version: 1.11

The Camellia enctypes and cksumtypes have received IANA assignments.
Add #defines using those assignments to krb5.h, remove the CAMELLIA
conditional, and enable testing code as appropriate.

The Camellia draft has not received an RFC number yet, so there is no
Doxygen markup for the enctype and cksumtype #defines.  That can be
added once the RFC number is known.

In krb5_init_creds_ctx and krb5_clpreauth_rock_st, use a boolean to
track whether we're still using the default salt instead of
overloading salt.length.  In preauth2.c, process afs3 salt values like
we would in krb5int_des_string_to_key, and set an s2kparams indicator
instead of overloading salt.length.  Also use an s2kparams indicator
in kdb_cpw.c's add_key_pwd.  Remove the s2k code to handle overloaded
salt lengths, except for a sanity check.

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@25837 dc483132-0cff-0310-8789-dd5450dbe970