[vector] RFR : Removed subAll() and few javadoc changes

[Kharbas, Kishor]

Hi,

Requesting review for a patch to,

1.       Remove subAll() method from vectors.

2.       Javadoc - add missing parameter definitions.

3.       Changed javadoc specification of reduction operations on floating point vectors.

Link : http://cr.openjdk.java.net/~kkharbas/vector-api/webrev_suball_javadoc.00/

Thank you,
Kishor