Merge r1822857, r1876815, r1893499, r1900024, r1900152, r1900306, r1900559, r1900564...

Merge r1822857, r1876815, r1893499, r1900024, r1900152, r1900306, r1900559, r1900564, r1900691, r1900694 from trunk:

* Makefile.in (build/config_vars.out): Rebuild if build/config_vars.sh
  has changed.

sort safe_env_lst
bz 64371

mod_optional_hook_import: debug message at APLOG_DEBUG level.

  *) de-duplicate ALOGNO from code copy.

ab: apr_base64_encode already NUL-terminate the output.

And returns the length including the trailing \0, so setting it at that
length is off by +1.

* Avoid an overflow on large inputs

PR: 66033

dav_get_liveprop_info() returns a long not an int.

Update the type of global_ns accordingly and update the format specifier when this variable is used in printf like functions.

This also aligns code with dav_core_insert_prop() in modules/dav/main/std_liveprop.c

Length computed by count_string() are accumulated in an apr_size_t, so be more consistent and use this data type also in this function.

Fix some typo

[skip ci]

Fix some typos

[skip ci]
Submitted by: jorton, gbechis, ylavic, icing, ylavic, rpluem, jailletc36, jailletc36, jailletc36, jailletc36
Reviewed by: jailletc36, rpluem, jim

git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1903618 13f79535-47bb-0310-9956-ffa450edef68