部分老式ARM处理器系列被移除

[unreal]

据最新OB current Changelog显示，ARM v7 以前的系列已经被删除。这是在清理代码树么？有些个系列好像都没有移植过

• Remove ARM8 and ARM9T support.
• Remove support for StrongARM (SA1), IXP12x0, IXP425 and XScale 80200.
• Remove ARM9E support.
• Remove ARM10 and ARM11 support.
• In gcc(1) on arm, change the default arch target from strongarm (armv4) to arm9e (armv5te without xscale extensions).

--自从俺在arm920T上摸过μClinux，还想在上面弄弄 μCOS-II.