- Aliases of file descriptors are now using the signal semaphore

of the original file descriptor.

- close() did not return 0 if the file descriptor in question
  was really just an alias. Fixed.

- Added a feature which makes it possible to have several clients
  use the standard I/O streams (stdin/stdout/stderr) and have these
  referring to their process' Input()/Output()/ErrorOutput()
  streams. This is intended to support the upcoming shared
  library feature.


git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14885 87f5fb63-7c3d-0410-a384-fd976d0f7a62

library/stdio_headers.h

@@ -1,5 +1,5 @@
 /*
- * $Id: stdio_headers.h,v 1.19 2005-03-11 13:23:18 obarthel Exp $
+ * $Id: stdio_headers.h,v 1.20 2005-03-12 09:43:48 obarthel Exp $
  *
  * :ts=4
  *
@@ -316,6 +316,8 @@ struct iob
 											   mode (sockets only). */
 #define FDF_IS_INTERACTIVE		(1UL<<11)	/* File is attached to a console window or
 											   something like it. */
+#define FDF_STDIO				(1UL<<12)	/* File is to be attached to one of the
+											   standard input/output/error streams. */
 
 /****************************************************************************/