Log Message:
gcc45: use a more reasonable specfile for netbsd
fix some build errors I see (using same patches as lang/gcc46)

build still failing at:
unwind-dw2.c:1452:5: error: unknown field 'ptm_ceiling' specified in initializer
unwind-dw2.c:1452:5: warning: missing braces around initializer
unwind-dw2.c:1452:5: warning: (near initialization for \ 
'once_regsizes.pto_mutex.<anonymous>')