ARM targetting cross-toolchain with GDC

[Timofei Bolshakoc]

I was able to compile DGC to the Hello, World status for ARM 
using crosstools-ng 1.18 eglibc. uclibc would not work, it lack 
some of the functions in the library, context switching. There 
are several places I cheat ( to get Hello, World! ). Please 
advise:

../gcc-4.7.2/libphobos/libdruntime/core/sys/posix/ucontext.d:274: 
Error: static assert  "Not implemented"

../gcc-4.7.2/libphobos/libdruntime/core/thread.d:3409: Error: 
static assert  "Not implemented"

../gcc-4.7.2/libphobos/libdruntime/core/thread.d:4237: Error: 
static assert  "Not implemented"

I simply commented static asserts - and I do not think it will 
fly with any real multi threading program. All the places 
consider context switching and assembly-level register 
manipulation. Can somebody help me with that?