[glib] Expand docs for thread names

[Matthias Clasen <matthiasc src gnome org>]

commit 635196b1ffc5e810431b5746d52138d2c3bcb1db
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Aug 18 18:13:02 2013 -0400

    Expand docs for thread names
    
    Thread names may be NULL, and don't have to be unique.
    The docs should tell you that.

 glib/gthread.c |    5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/glib/gthread.c b/glib/gthread.c
index c27bca6..c4114aa 100644
--- a/glib/gthread.c
+++ b/glib/gthread.c
@@ -802,7 +802,7 @@ g_thread_proxy (gpointer data)
 
 /**
  * g_thread_new:
- * @name: a name for the new thread
+ * @name: (allow-none): an (optional) name for the new thread
  * @func: a function to execute in the new thread
  * @data: an argument to supply to the new thread
  *
@@ -813,6 +813,7 @@ g_thread_proxy (gpointer data)
  * with g_thread_join().
  *
  * The @name can be useful for discriminating threads in a debugger.
+ * It is not used for other purposes and does not have to be unique.
  * Some systems restrict the length of @name to 16 bytes.
  *
  * If the thread can not be created the program aborts. See
@@ -843,7 +844,7 @@ g_thread_new (const gchar *name,
 
 /**
  * g_thread_try_new:
- * @name: a name for the new thread
+ * @name: (allow-none): an (optional) name for the new thread
  * @func: a function to execute in the new thread
  * @data: an argument to supply to the new thread
  * @error: return location for error, or %NULL