RFR (XS): 8166930: minor cleanups 1) remove reference to ZIP_ReadMappedEntry 2) checking of st_mode

[Jiangli Zhou]

Hi Calvin,

Looks good.

Thanks,
Jiangli

> On Sep 30, 2016, at 9:20 AM, Calvin Cheung <calvin.cheung at oracle.com> wrote:
> 
> Hi,
> 
> Please review this small change for two minor cleanups as mentioned in the bug report.
> 
> bug: https://bugs.openjdk.java.net/browse/JDK-8166930
> 
> webrev: http://cr.openjdk.java.net/~ccheung/8166930/webrev.00/
> 
> Testing:
>    - JPRT with testset_hotspot
>    - all tests under hotspot/runtime on the 8 supported platforms
> 
> thanks,
> Calvin