Bug 25387 [Wizards] [resources] File System Import changes file permissions
Creating a Project (simple or otherwise) and importing files into it using the import->File System wizard takes away the executable permission from the imported exec files.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/wizards/datatransfer/ImportOperation.java
*   workspace
     * @param provider the file system structure provider to use
     * @param overwriteImplementor the overwrite strategy to use
     * @param filesToImport the list of file system objects to be imported
     *  (element type: <code>Object</code>)
     */
    public ImportOperation(IPath containerPath,
            IImportStructureProvider provider,
            IOverwriteQuery overwriteImplementor, List filesToImport) {
        this(containerPath, null, provider, overwriteImplementor);
        setFilesToImport(filesToImport);
    }
    /**
     * Prompts if existing resources should be overwritten. Recursively collects
     * existing read-only files to overwrite and resources that should not be
     * overwritten.
     * 
     * @param sourceStart destination path to check for existing files
     * @param sources file system objects that may exist in the destination
     * @param noOverwrite files that were selected to be skipped (don't overwrite).
     * 	object type IPath
     * @param overwriteReadonly the collected existing read-only files to overwrite.
     * 	object type IPath
     * @param policy on of the POLICY constants defined in the
     * class.
     */
    void collectExistingReadonlyFiles(IPath sourceStart, List sources,
            ArrayList noOverwrite, ArrayList overwriteReadonly, int policy) {
        IWorkspaceRoot workspaceRoot = ResourcesPlugin.getWorkspace().getRoot();
        Iterator sourceIter = sources.iterator();