add hidden_def() macros from glibc but stub them out to cut down on diffs

libpthread/linuxthreads/mutex.c

@@ -24,6 +24,9 @@
 #include "queue.h"
 #include "restart.h"
 
+#undef hidden_def
+#define hidden_def(sym)
+
 int __pthread_mutex_init(pthread_mutex_t * mutex,
                        const pthread_mutexattr_t * mutex_attr)
 {
@@ -35,6 +38,7 @@ int __pthread_mutex_init(pthread_mutex_t * mutex,
   return 0;
 }
 strong_alias (__pthread_mutex_init, pthread_mutex_init)
+hidden_def (__pthread_mutex_init)
 
 int __pthread_mutex_destroy(pthread_mutex_t * mutex)
 {
@@ -54,6 +58,7 @@ int __pthread_mutex_destroy(pthread_mutex_t * mutex)
   }
 }
 strong_alias (__pthread_mutex_destroy, pthread_mutex_destroy)
+hidden_def (__pthread_mutex_destroy)
 
 int __pthread_mutex_trylock(pthread_mutex_t * mutex)
 {
@@ -90,6 +95,7 @@ int __pthread_mutex_trylock(pthread_mutex_t * mutex)
   }
 }
 strong_alias (__pthread_mutex_trylock, pthread_mutex_trylock)
+hidden_def (__pthread_mutex_trylock)
 
 int __pthread_mutex_lock(pthread_mutex_t * mutex)
 {
@@ -123,6 +129,7 @@ int __pthread_mutex_lock(pthread_mutex_t * mutex)
   }
 }
 strong_alias (__pthread_mutex_lock, pthread_mutex_lock)
+hidden_def (__pthread_mutex_lock)
 
 int __pthread_mutex_timedlock (pthread_mutex_t *mutex,
 			       const struct timespec *abstime)
@@ -198,6 +205,7 @@ int __pthread_mutex_unlock(pthread_mutex_t * mutex)
   }
 }
 strong_alias (__pthread_mutex_unlock, pthread_mutex_unlock)
+hidden_def (__pthread_mutex_unlock)
 
 int __pthread_mutexattr_init(pthread_mutexattr_t *attr)
 {