openrisc: add post on gcc rewrite.
openrisc: add post on gcc rewrite.

stffrdhrn/stffrdhrn.github.io,stffrdhrn/stffrdhrn.github.io,stffrdhrn/stffrdhrn.github.io,stffrdhrn/stffrdhrn.github.io,stffrdhrn/stffrdhrn.github.io