Check in the new memory allocator that allows the heap to span multiple blocks.

git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@2267 1d2547de-c912-0410-9cb9-b8ca96c0e9e2
Check in the portable.h version required to use heap_5.c.

git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@2268 1d2547de-c912-0410-9cb9-b8ca96c0e9e2
Simply some of the alignment calculations in heap_4.c to match those used in heap_5.c.
Remove some apparently obsolete code from xTaskPriorityDisinherit() (a task cannot be both blocked and giving bac a mutex at the same time].
Update the new "mutex held count" increment and decrement functions to allow mutexes to be created before the scheduler is started.


git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@2269 1d2547de-c912-0410-9cb9-b8ca96c0e9e2
Update the MSVC simulator demo to demonstrate heap_5 allocator and pdTICKS_TO_MS macro being used.

git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@2270 1d2547de-c912-0410-9cb9-b8ca96c0e9e2
Make the parameters to vPortDefineHeapRegions() const.
Add additional asserts to the Keil CM3 and CM4F ports (other CM3/4 ports already updated).
Add the additional yield necessitated by the mutex held count to the case when configUSE_QUEUE_SETS is 0.


git-svn-id: https://svn.code.sf.net/p/freertos/code/trunk@2271 1d2547de-c912-0410-9cb9-b8ca96c0e9e2