Unix: Handle permissions settings for flock-based mutexes in

unixd_set_global|proc_mutex_perms().  Allow the functions to be
called for any type of mutex.

This resolves a fatal problem with mod_rewrite on systems where
APR uses flock-based mutex.

It simplifies mod_ssl as well, which had special logic to perform
the chown().  It fixed an init error with mod_ssl on systems where
flock is used when the user had no SSLMutex directive.

The Unix MPMs continue to call unixd_set_global|proc_mutex_perms()
only for SysV sems.  There is no permission problem with flock-based
accept mutexes since the child init logic for the MPMs is done
prior to switching identity.

PR:              20312


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@100189 13f79535-47bb-0310-9956-ffa450edef68

modules/ssl/mod_ssl.h

@@ -394,7 +394,6 @@ typedef struct {
     ssl_mutexmode_t nMutexMode;
     apr_lockmech_e  nMutexMech;
     const char     *szMutexFile;
-    BOOL           ChownMutexFile;
     apr_global_mutex_t   *pMutex;
     apr_array_header_t   *aRandSeed;
     apr_hash_t     *tVHostKeys;