Merge pull request #509 from compnerd/compiler-target

build: support `CMAKE_SWIFT_COMPILER_TARGET`
Signed-off-by: Kim Topley <[email protected]>

Author: ktopley-apple

PATCHES

@@ -519,3 +519,4 @@ github commits starting with 29bdc2f from
 [f911a44] APPLIED rdar://54572081
 [6d32c4d] APPLIED rdar://54572081
 [9005cb4] APPLIED rdar://54572081
+[68875cb] APPLIED rdar://54572081