debian/watch version 5 with dh-sequence-nodejs and components

[Yadd <yadd@debian.org>]

Hi,

if you want to update debian/watch to version 5 in a JS package that 
uses dh-sequence-nodejs (dh-nodejs) and has components, you **must** 
build-depends on version >= 0.16.0~ else install will be broken.

Cheers,
Xavier