Prep for 6.8 release

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3899 42af7a65-404d-4744-a932-0658087f49c3

ReleaseNotes

@@ -2054,3 +2054,34 @@ information).  Changes in this release are summarized below:
       handling fixed.  FAT directory allocation and initialization bug.
       STM32 SDIO DMA race condition bug.  eZ80 UART1 serial driver errors
       (Paul Osmialowski)
+
+nuttx-6.8
+^^^^^^^^^
+
+The 75th release of NuttX, Version 6.8, was made on August 19, 2011 and is
+available for download from the SourceForge website.  Note that release
+consists of two tarballs:  nuttx-6.8.tar.gz and apps-6.8.tar.gz.  Both
+may be needed (see the top-level nuttx/README.txt file for build
+information).  Changes in this release are summarized below:
+
+    * NuttX has been ported to run on the FreeScale Cortex-M4 "Kinetis" boards.
+      Two board ports are available for (1) the Kinetis KwikStik-K40 and
+      (2) the Kinetis TWR-K60N512 tower.
+
+    * Support for RGMP 0.3.  This version of RGMP now runs on the OMAP4430 (arm)
+      pandaboard
+
+    * LPC17xx CAN driver extended to support both CAN1 and CAN2 (submitted by
+      Li Zhuoy (Lzzy))
+
+    * Fixed several critical bugs related to signal handling initialization and
+      for signals the wake up tasks that are waiting to send or receive message
+      queues.Both are important.  (submitted by hkwilton).
+
+    * drivers/can.c:  Fixed a semaphore overflow problem in the CAN driver
+      (reported by Li Zhouy (Lzzy)).
+
+    * Added a new ADC driver infrastructure and TI ADS1255 driver both
+      developed and submitted by Li Zhouy (Lzzy)).
+
+See the change log for additional changes included in this release.