RFR (S) round 1 for 8135195 VM Options file should not be limited to 1024 bytes

[Ron Durbin]

Here is the round 1 webrev for 8135195
This latest version of the fix is much simpler than the previous version so no delta webrev is provided.

Webrev link:
http://cr.openjdk.java.net/~rdurbin/8135195_OCR1_JDK9_webrev/

RFE request:
https://bugs.openjdk.java.net/browse/JDK-8135195

This RFE removes the limitation on the size of VM Options files. That 
limit is currently 1K bytes.
Removing that limit will allow options files to be read with no 
practical size limit.

This feature has been tested on:
     OS:
       Solaris, MAC, Windows, Linux
     Tests:
       Manual unit test
     JPRT with -testset hotspot (including the SQE proposed test 
     coverage for this feature.)