Fix a couple QNX-related test issues

Author: jakepetroules

Sources/SWBQNXPlatform/Specs/QNXLibtool.xcspec

@@ -63,6 +63,11 @@
                 );
                 IsInputDependency = Yes;
             },
+            {
+                Name = "LIBTOOL_USE_RESPONSE_FILE";
+                Type = Boolean;
+                DefaultValue = YES;
+            },
         );
     },
 )

Tests/SWBCoreTests/CommandLineToolSpecDiscoveredInfoTests.swift

@@ -82,6 +82,11 @@ import SWBMacro
         let toolchains = core.toolchainRegistry.toolchains
         #expect(toolchains.count > 0) // must be at least one toolchain (default)
         for toolchain in toolchains.sorted(by: \.identifier) {
+            if toolchain.identifier == "qnx" {
+                // QNX toolchains do not have clang
+                continue
+            }
+
             let clangPath = try #require(toolchain.executableSearchPaths.findExecutable(operatingSystem: core.hostOperatingSystem, basename: "clang"), "Unable to find clang in search paths for toolchain '\(toolchain.identifier)': \(toolchain.executableSearchPaths.environmentRepresentation)")
             let info = try await discoveredClangToolInfo(toolPath: clangPath, arch: "undefined_arch", sysroot: nil)
             #expect(info.toolPath == clangPath)

Tests/SWBCoreTests/SettingsTests.swift

@@ -1774,7 +1774,7 @@ import SWBMacro
         #expect(!core.platformRegistry.platforms.isEmpty)
         for developmentTeam in ["ABCDWXYZ", ""] {
             for platform in core.platformRegistry.platforms {
-                if ["android", "linux", "windows"].contains(platform.name) {
+                if ["android", "linux", "qnx", "windows"].contains(platform.name) {
                     continue
                 }
                 for sdk in platform.sdks {