Implement 64-bit array operations for byte[]
Remove SSE3 instructions
Use correct mov instruction
add nothrow to debug code
add TypeInfo to GC calls
Merge pull request #816 from economicmodeling/arraybyte_64bit

Implement 64-bit array operations for byte[]
Merge pull request #819 from rainers/gc_fix_nothrow

add nothrow to debug code in GC
Merge pull request #821 from rainers/gc_typeinfo

add TypeInfo to GC calls