Standardize directory names

Reorganized.  Created a new top level include directory that will hold all of Trick's header files. Moved all of the Trick headers to this directory.  Created a libexec directory that holds all of the executables that users don't need to execute directly.  Changed all of the executables remaining in bin to start with "trick-".  In the sim_services directories changed all source files to find the Trick headers in their new location.  Since all of the include files are gone in sim_services, removed the src directories as well, moving all of the source files up a level.  Moved the makefiles, docs, man, and other architecture independent files into a top level share directory.  Renamed lib_${TRICK_HOST_CPU} to lib64 or lib depending on the platform we're currently on.

refs #63

trick_source/sim_services/VariableServer/VariableServer_init.cpp

@@ -0,0 +1,19 @@
+
+#include "trick/VariableServer.hh"
+#include "trick/exec_proto.hh"
+
+int Trick::VariableServer::init() {
+
+    int ret ;
+
+    /* start up a thread for the input processor variable server */
+    if ( enabled ) {
+        ret = listen_thread.check_and_move_listen_device() ;
+        if ( ret != 0 ) {
+            return ret ;
+        }
+        listen_thread.create_thread() ;
+    }
+
+    return(0) ;
+}