Invalidate manifest cache when -Xbuild-tools-swiftc
changes
#7760
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The manifest cache key should take into account flags passed to
-Xbuild-tools-swiftc
Motivation:
SwiftPM did not re-evaluate manifests even after changing
-Xbuild-tools-swiftc
Modifications:
Hash those extra flags into manifest cache key
Result:
Manifest will be properly re-evaluated after changing
-Xbuild-tools-swiftc
.