Fall back to USE_FCNTL_SERIALIZED_ACCEPT for Solaris. It's foolish us

wasting resources trying to solve what may end up being bugs in solaris.

PR:		1779, 1854, 1904


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@80364 13f79535-47bb-0310-9956-ffa450edef68