restore use of global mutex under !APR_HAS_THREADS

followup to r1852442 which appears to have been too agressive in wrapping
blocks with #if APR_HAS_THREADS.  With !APR_HAS_THREADS a global mutex 
is a proc mutex.




git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1866145 13f79535-47bb-0310-9956-ffa450edef68
3 files changed