🔧 Fix Carthage Builds

- Specify SDK root
- Do not use Xcode 9 new build system

Author: alexaubry

JavaScriptKit.xcodeproj/project.pbxproj

@@ -857,6 +857,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = fr.alexaubry.JavaScriptKit;
 				PRODUCT_NAME = JavaScriptKit;
 				PROVISIONING_PROFILE_SPECIFIER = "";
+				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
@@ -885,6 +886,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = fr.alexaubry.JavaScriptKit;
 				PRODUCT_NAME = JavaScriptKit;
 				PROVISIONING_PROFILE_SPECIFIER = "";
+				SDKROOT = iphoneos;
 				SKIP_INSTALL = YES;
 				SWIFT_VERSION = 4.0;
 				TARGETED_DEVICE_FAMILY = "1,2";

JavaScriptKit.xcodeproj/project.xcworkspace/xcshareddata/WorkspaceSettings.xcsettings

@@ -1,5 +1,8 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
-<dict/>
+<dict>
+	<key>BuildSystemType</key>
+	<string>Latest</string>
+</dict>
 </plist>