message: Removed pthread from libpg_query
diff: #include "utils/memdebug.h"
  #include "utils/memutils.h"
  -#include <pthread.h>
  +//#include <pthread.h>
  /*****************************************************************************
  * GLOBAL MEMORY *
  @@ -154,7 +154,7 @@ MemoryContextInit(void)
  {
  AssertState(TopMemoryContext == NULL);
  - pthread_key_create(&thread_ctx_key, MemoryContextShutdown);
  +// pthread_key_create(&thread_ctx_key, MemoryContextShutdown);
  /*
  * Initialize TopMemoryContext as an AllocSetContext with slow growth rate
  @@ -199,7 +199,7 @@ MemoryContextInit(void)
  thread_context->ErrorContext = ErrorContext;
  thread_context->CurrentMemoryContext = CurrentMemoryContext;
  - pthread_setspecific(thread_ctx_key, thread_context);
  + //pthread_setspecific(thread_ctx_key, thread_context);
  }
  /*
  