Merge "limit TelecomManager#registerPhoneAccount to 10; api doc update" into qt-dev

     * when placing calls. The user may still need to enable the {@link PhoneAccount} within

     * the phone app settings before the account is usable.

     * <p>

     * Note: Each package is limited to 10 {@link PhoneAccount} registrations.

     * <p>

     * A {@link SecurityException} will be thrown if an app tries to register a

     * {@link PhoneAccountHandle} where the package name specified within

     * {@link PhoneAccountHandle#getComponentName()} does not match the package name of the app.

     * <p>

     * A {@link IllegalArgumentException} will be thrown if an app tries to register a

     * {@link PhoneAccount} when the upper bound limit, 10, has already been reached.

     *

     * @param account The complete {@link PhoneAccount}.

     */