Reverted the forked process model changes after finding out that

they needed to be more involved (Each child process needed to
initialize the JVM) and because it introduced a whole set of
new problems that were not acceptible. Instead, now we will support
an optional single-threaded process model that can be invoked to
deal with JVMs that have trouble executing when invoked from a
thread.

CASA-auth-token/server/AuthTokenValidate/Svc/linux/internal.h

@@ -45,7 +45,6 @@ extern "C" {
 #include <stdlib.h>
 #include <pthread.h>
 #include <syslog.h>
-#include <sys/mman.h>
 #include <signal.h>
 #include <sys/stat.h>
 #include <sys/file.h>