posix: Doxygen Enhancement Task #12

http://www.google-melange.com/gci/task/view/google/gci2012/8003214

cpukit/posix/src/cancel.c

@@ -1,3 +1,10 @@
+/**
+ * @file
+ *
+ * @brief Canceling Execution of a Thread
+ * @ingroup POSIX
+ */
+
 /*
  *  COPYRIGHT (c) 1989-2008.
  *  On-Line Applications Research Corporation (OAR).

cpukit/posix/src/mqueuegetattr.c

@@ -1,3 +1,10 @@
+/**
+ * @file
+ *
+ * @brief Message Queue Attributes
+ * @ingroup POSIX
+ */
+
 /*
  *  NOTE:  The structure of the routines is identical to that of POSIX
  *         Message_queues to leave the option of having unnamed message

cpukit/posix/src/psxnametoid.c

@@ -1,3 +1,10 @@
+/**
+ * @file
+ *
+ * @brief POSIX Name to ID
+ * @ingroup POSIX
+ */
+
 /*
  *  COPYRIGHT (c) 1989-2009.
  *  On-Line Applications Research Corporation (OAR).

cpukit/posix/src/setitimer.c

@@ -1,3 +1,10 @@
+/**
+ * @file
+ *
+ * @brief Set the Timer
+ * @ingroup POSIX
+ */
+
 /*
  *  COPYRIGHT (c) 1989-2008.
  *  On-Line Applications Research Corporation (OAR).