Add FreeRTOS-Plus directory.

FreeRTOS/Demo/lwIP_MCF5235_GCC/Changelog.txt

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+
+2006-08-31 (REL_1_3) Christian Walter <wolti@sil.at>:
+ Notes: Fixed some bugs in the lwIP porting layer. This includes a 
+   memory leak, wrong tasknames and an unnecessary lock of the
+   scheduler.
+
+ Detailed notes:
+   - BUG: Sys_arch_thread_remove did not free the memory from
+       the TCB.
+   - BUG: Unnecessary call to vTaskSuspendAll removed.
+   - BUG: Bug with counting variable. The first to lwIP tasks
+       got the same name (lwIP0).
+
+2006-08-31 (REL_1_2) Christian Walter <wolti@sil.at>:
+ Notes: Added HTML documentation used for FreeRTOS. Fixed copyright
+   issues.
+
+2006-08-30 (REL_1_2) Christian Walter <wolti@sil.at>:
+ Notes: Fixed bug in serial transmission function vSerialPutString which
+   gives unintended behaviour. 
+
+ Detailed notes:
+   - BUG: vSerialPutString should call xSerialPutChar with a small timeout
+       such that a retransmission is tried rather fast. The previous 
+       port uses portMAX_DELAY which blocked it to long. 
+
+2006-08-29 (REL_1_1) Christian Walter <wolti@sil.at>:
+ Notes: Updated lwip to 1.1.1 and fixed bugs in FEC driver as well as in
+   the FreeRTOS porting layer (sys_arch.c)
+
+ Detailed notes:
+   - BUG: Fixed thread creation in sys_thread_new which needs the scheduler
+       disabled because otherwise a task could ge started immediately by
+       portYIELD( ) leaving the lwIP thread datatstructures uninitialized.
+   - BUG: The FEC driver must guard the ARP layer with a semaphore because
+       it is not thread safe.
+   - BUG: Repaired sys_mbox_free to work around an lwIP bug with a non empty
+       mbox. An assertion is only triggered if a real memory leak is detected.
+   - BUG: Timeouts are now correctly converted to ticks within the sys_arch 
+       layer.
+   - FEATURES: General improvements in the sys_arch layer.
+       author in this project.
+
+2006-08-28 (REL_1_0) Christian Walter <wolti@sil.at>:
+ Notes: Initial version of FreeRTOS/lwIP port for MCF5235.
+