[SR-13164] Link correctly against the C++ standard library on Windows

[swift-ci]

Previous ID	SR-13164
Radar	rdar://problem/83423233
Original Reporter	MForster (JIRA User)
Type	New Feature

Additional Detail from JIRA

Votes	0
Component/s	Compiler
Labels	New Feature, CxxInterop, Windows
Assignee	None
Priority	Medium

md5: d9d8ab51197f34ce89129369bc816236

Issue Description:

#30914 adds support for linking against the C++ standard library when C++ interop is enabled. We need to make sure that this works on Windows as well.

See context here.

[zoecarver]

@swift-ci create

[compnerd]

I think that this just needs verification, but it should be fixed. The consequence of my changes to the swift-driver is that we do not need to change this - the swift driver will use clang++ as the linker driver, which will correctly identify the c++ runtime and link to it. Should the user wish to change the c++ runtime, they should be able to use `-Xclang-linker -stdlib=libc++`.

[compnerd]

Going to mark this as fixed for now. We can re-open it if it is still an issue. We should be linking properly due to the use of clang as the linker driver.