Updated tests for SE-0036 and SE-0066

[ahoppen]

SE-0066 has already been implemented in swift and currently swift-pm tests are currently failing.

The pull request for SE-0036 is pending, tests for it are failing without this update.

Both changes are backwards-compatible and do not require any further implementation in swift.

[ddunbar]

I don't see tests failing on TOT due to 0066, although I do see a bunch of warnings. However, this PR seems to have missed a few of those cases, for example:

swiftpm/Sources/POSIX/popen.swift:22:122: warning: single argument function types require parentheses
public func popen(_ arguments: [String], redirectStandardError: Bool = false, environment: [String: String] = [:], body: String -> Void) throws
                                                                                                                         ^~~~~~
                                                                                                                         (     )
Link POSIX
Compile Swift Module 'Utility' (14 sources)
Link PackageDescription
swiftpm/Sources/Utility/Verbosity.swift:92:122: warning: single argument function types require parentheses
public func popen(_ arguments: [String], redirectStandardError: Bool = false, environment: [String: String] = [:], body: String -> Void) throws {
                                                                                                                         ^~~~~~
                                                                                                                         (     )
swiftpm/Sources/Utility/Verbosity.swift:92:122: warning: single argument function types require parentheses
public func popen(_ arguments: [String], redirectStandardError: Bool = false, environment: [String: String] = [:], body: String -> Void) throws {
                                                                                                                         ^~~~~~
                                                                                                                         (     )
swiftpm/Sources/Utility/Verbosity.swift:92:122: warning: single argument function types require parentheses
public func popen(_ arguments: [String], redirectStandardError: Bool = false, environment: [String: String] = [:], body: String -> Void) throws {
                                                                                                                         ^~~~~~
                                                                                                                         (     )

[ddunbar]

@swift-ci please test and merge

[ddunbar]

Fixed the others in 3db9452.