libweave: Build libweave as shared library

Added own gyp files of libweave.
Added exports of necessary symbols.
Added own test runner.

CQ-DEPEND=CL:290403
BUG=brillo:1258
TEST='FEATURES=test emerge-gizmo libweave buffet'

Change-Id: I2c6c5f3e345b8baeabd9f56be44e91eaeb28bc8b
Reviewed-on: https://chromium-review.googlesource.com/290405
Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
Tested-by: Vitaly Buka <vitalybuka@chromium.org>
2 files changed
tree: 52407f33d638569094bdd522ebaf484b44d571fe
  1. buffet/