Correct kadm5.acl back-reference documentation

In kadm5.acl, *N in the target principal name refers to the Nth
wildcard in the acting principal pattern, not the Nth component.

(cherry picked from commit 39bac22ed7f5ff583e92d082b34f0c5a2a3cad4c)

ticket: 7774
version_fixed: 1.12
status: resolved
Improve default ccache name API documentation

Document the lifetime and caching behavior of the
krb5_cc_default_name() return value.  Document that
krb5_cc_set_default_name() may be called with NULL to purge the cached
value.  Correct a typo in the krb5_cc_default() summary and explicitly
reference krb5_cc_default_name().

(cherry picked from commit 3e5fe754b9f9742d1c9b1564633d4172277166db)

ticket: 7775
version_fixed: 1.12
status: resolved
Added a new ccache doc to "Kerberos V5 concepts"

This is to add a short introductory document on credential
caches to the Concepts section of Kerberos documentation.

(cherry picked from commit 251f94621328277044e3ae1a10ecd3ddfdda1dbb)

ticket: 7776
Edit ccache_def.rst

Re-fill to 70 columns.  Replace non-ascii apostrophes with ASCII ones.
Edit wording slightly.

(cherry picked from commit 482869d393807d02668cf49ce74666d682cf77a6)

ticket: 7776
version_fixed: 1.12
status: resolved
Update doc for current kdb5_util dump version

kdb5_util.rst incorrectly describes the current default dump format
version as 6 when it should be 7.  Reported by Jeff D'Angelo.

(cherry picked from commit f0d7309a20665ac16a22856e0c8cffdb156f2d24)

ticket: 7777
version_fixed: 1.12
status: resolved