tree ca5ceb796517f5f76dc9d86b547541e8129f65f5
parent 652a6b033428e6c668333bcf2d510332dca1f8c0
author Shawn Pearce <spearce@spearce.org> 1500743185 -0700
committer Shawn Pearce <spearce@spearce.org> 1501262445 -0700

Use w1 for hashCode of AbbreviatedObjectId

Very short abbreviations that are under 8 hex digits do not
have values in w2. Use w1 as the Java hashCode() instead, so
that the prefix of the abbreviation is always included in the
hashing function used by any java.util.Collection type.

Change-Id: Idaf69f86b62630ba4a022d31b4c293c6d138f557