gcc-4.7: исправил ошибки компиляции

extensions/lib/SingleProcess.cc

 #include <sys/wait.h>
 #include <sys/types.h>
 #include <signal.h>
+#include <unistd.h>
 #include <iostream>
 #include "Mutex.h"
 #include "SingleProcess.h"

include/UniSetTypes.h

@@ -31,6 +31,7 @@
 #include <list>
 #include <limits>
 #include <ostream>
+#include <unistd.h>
 
 #include <omniORB4/CORBA.h>
 #include "UniSetTypes_i.hh"

src/Communications/ComPort.cc

@@ -10,6 +10,7 @@
 #include <cstdlib>
 #include <cstring>
 
+#include <unistd.h>
 #include <termios.h>
 #include <fcntl.h>
 #include <errno.h>

src/Various/WDTInterface.cc

@@ -2,6 +2,7 @@
 // --------------------------------------------------------------------------
 #include <iostream>
 #include <cstring>
+#include <unistd.h>
 #include <fcntl.h>
 #include <errno.h>
 #include "WDTInterface.h"