hg: panama/panama/jdk: Update template to replace existing sources.

[paul.sandoz at oracle.com]

Changeset: 163a29051a0b
Author:    psandoz
Date:      2017-07-15 10:57 -0700
URL:       http://hg.openjdk.java.net/panama/panama/jdk/rev/163a29051a0b

Update template to replace existing sources.

! test/panama/vector-draft-spec/gen-src.sh
! test/panama/vector-draft-spec/src/main/java/com/oracle/vector/vectors/X-VectorBits.java.template