Fix build failure due to non-standard PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP.
Fix excessive CPU usage due to unhandled POLLOUT events, and fix off-by-one.
Index: src/eventloop.cpp
--- src/eventloop.cpp.orig
+++ src/eventloop.cpp
@@ -85,8 +85,10 @@ DefaultMutex::DefaultMutex(bool recursive)
 {
   if (recursive)
   {
-    pthread_mutex_t recmutex = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP;
-    _mutex = recmutex;
+    pthread_mutexattr_t attr;
+    pthread_mutexattr_init(&attr);
+    pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+    pthread_mutex_init(&_mutex, &attr);
   }
   else
   {
@@ -175,13 +177,14 @@ void DefaultMainLoop::dispatch()
   if (_fdunlock)
   {
     fds[nfd].fd = _fdunlock[0];
-    fds[nfd].events = POLLIN | POLLOUT | POLLPRI ;
+    fds[nfd].events = POLLIN | POLLPRI;
     fds[nfd].revents = 0;
 
     nfd++;
     fds[nfd].fd = _fdunlock[1];
-    fds[nfd].events = POLLIN | POLLOUT | POLLPRI ;
+    fds[nfd].events = POLLIN | POLLPRI;
     fds[nfd].revents = 0;
+    nfd++;
   }
 
   _mutex_w.unlock();