wince gcc and clmips incompatibility

[DJ Delorie]

> The "pair" relocation is known by gcc wince but is not emitted
> in this case. I will try and fix it.

The reason is that gcc's MIPS backend can optimize the low and high
loads separately, so there may not always be a pair of relocs.  For
example, it may do a HI reloc followed by two LO relocs.  Forcing gcc
to emit a pair of relocs for this, regardless of the type, would
drastically effect its optimizer.