Merge r1341905, r1342065, r1341930, r1345147, r1344712, r1814465 from trunk:
suexec: Add support for logging to syslog as an alternative to a
logfile.
* support/suexec.c (err_output) [AP_LOG_SYSLOG]: Log to syslog.
(main): Close syslog fd if open, before execv. Add -V output
for AP_LOG_SYSLOG.
* configure.in: Add --with-suexec-syslog argument; allow
--without-suexec-logfile to omit definition of AP_LOG_EXEC.
suexec: Support use of setgid/setuid capability bits on Linux, a
weaker set of privileges than the full setuid/setgid root binary.
* configure.in: Add --enable-suexec-capabilites flag.
* Makefile.in: If configured, use setcap instead of chmod 7555 on
installed suexec binary.
* modules/arch/unix/mod_unixd.c (unixd_pre_config): Drop test for
setuid bit if capability bits are used.
* docs/manual/: Add docs.
* docs/manual/suexec.html.en: Update for syslog logging.
* configure.in: Correct handling of --with-suexec-logfile in r1341905,
thanks to rpluem.
* support/suexec.c: Define AP_LOG_FACILITY.
(err_output): Use AP_LOG_FACILITY for syslog facility.
Suggested by: kbrand
* configure.in: Fix help text for --with-suexec-syslog.
Submitted by: jorton
Reviewed by: jorton, ylavic, jim
git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@
1832565 13f79535-47bb-0310-9956-
ffa450edef68