Import MIT KRB5 1.15.1, which will gracefully replace KTH Heimdal.vendor/krb5/1.15.1

The tarball used in this import is the same tarball used in
ports/krb5-115 r435378.

Obtained from:	http://web.mit.edu/kerberos/dist/
Thanks to:	pfg (for all your tireless behind-the-scenes effort)

1 files changed, 59 insertions, 0 deletions

diff --git a/doc/html/_sources/appdev/refs/api/krb5_init_creds_init.txt b/doc/html/_sources/appdev/refs/api/krb5_init_creds_init.txt
new file mode 100644
index 000000000000..6bbbeed869e4
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+krb5_init_creds_init -  Create a context for acquiring initial credentials. 
+============================================================================
+
+..
+
+.. c:function:: krb5_error_code krb5_init_creds_init(krb5_context context, krb5_principal client, krb5_prompter_fct prompter, void * data, krb5_deltat start_time, krb5_get_init_creds_opt * options, krb5_init_creds_context * ctx)
+
+..
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+
+:param:
+
+	          **[in]** **context** - Library context
+
+	          **[in]** **client** - Client principal to get initial creds for
+
+	          **[in]** **prompter** - Prompter callback
+
+	          **[in]** **data** - Prompter callback argument
+
+	          **[in]** **start_time** - Time when credentials become valid (0 for now)
+
+	          **[in]** **options** - Options structure (NULL for default)
+
+	          **[out]** **ctx** - New initial credentials context
+
+
+..
+
+
+:retval:
+         -   0   Success; otherwise - Kerberos error codes
+
+
+..
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+
+
+This function creates a new context for acquiring initial credentials. Use :c:func:`krb5_init_creds_free()` to free *ctx* when it is no longer needed.
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+
+..
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+