Fix build warning "restarting link with /LTCG".

[StephanTLavavej]

Fixes #1139. Followup to #593.

This links the atomic_wait satellite with /LTCG;/opt:ref,icf (release) or /opt:ref,noicf (debug):

STL/stl/CMakeLists.txt

Lines 509 to 510 in b74b618

	add_stl_dlls("" "" "${VCLIBS_RELEASE_OPTIONS}" "/GL" "/LTCG;/opt:ref,icf")
	add_stl_dlls("d" "_DEBUG" "${VCLIBS_DEBUG_OPTIONS}" "" "/opt:ref,noicf")

[BillyONeal]

I am sad that /WX allowed this. I saw it during testing but had not touched our build in long enough I thought it must have been normal.