Use -D_POSIX_PTHREAD_SEMANTICS even if not threads are being used to force

the correct implementation of ctime_r() to be used.

src/build/Common.gmake

@@ -269,6 +269,8 @@ else
       XP_SEM :=    1
       MT_CFLAGS    +=    -D_POSIX_PTHREAD_SEMANTICS
       MT_CFLAGS    += -DUSE_XP_SEMAPHORES
+      # This makes ctime_r() be the correct one.
+      CFLAGS	   += -D_POSIX_PTHREAD_SEMANTICS
      else            # Linux / Other UNIX
       XP_SEM :=    1
       MT_CFLAGS    += -DUSE_XP_SEMAPHORES

src/xpdev/genwrap.h

@@ -277,13 +277,7 @@ DLLEXPORT int DLLCALL	get_errno(void);
 #endif
 
 #if defined(__solaris__)
-	/*
-	 * Solaris actually does have TWO ctime_r() implementations.
-	 * there is proboble a CORRECT way of selecting one, but I don't
-	 * have time to look it up right now.
-	 * This is therefore, a Kludge.  ToDo 
-	 */
-	#define CTIME_R(x,y)	__posix_ctime_r(x,y)
+	#define CTIME_R(x,y)	ctime_r(x,y)
 	/* #define CTIME_R(x,y)	ctime_r(x,y,sizeof y) */
 #else
 	#define CTIME_R(x,y)	ctime_r(x,y)