fix permissions
diff --git a/Xcode/SDL/SDL.xcodeproj/project.pbxproj b/Xcode/SDL/SDL.xcodeproj/project.pbxproj
old mode 100755
new mode 100644
diff --git a/build-scripts/config.guess b/build-scripts/config.guess
old mode 100644
new mode 100755
diff --git a/build-scripts/config.sub b/build-scripts/config.sub
old mode 100644
new mode 100755