Change the pre-release range semantics.

This allows ">=1.2.3-dev <1.2.3" to work how it looks like it should
work, as opposed to matching no versions at all.

R=rnystrom@google.com

Review URL: https://codereview.chromium.org//1149543002
4 files changed
tree: e7720bd16ee8c63070c1f0265dec2f98af79a235
  1. pkgs/