Check in RL78 GCC port layer now it has been verified with the fixed compiler.

git-svn-id: http://svn.code.sf.net/p/freertos/code/trunk@2250 1d2547de-c912-0410-9cb9-b8ca96c0e9e2
Update RL78 GCC demo application after testing with fixed compiler.

git-svn-id: http://svn.code.sf.net/p/freertos/code/trunk@2251 1d2547de-c912-0410-9cb9-b8ca96c0e9e2