tree 2b0f596a7b24cd1c7510171ed252b88dc2d094b8
parent a4815d35375e249615e76679bbd8a0dd47f7b129
author Yingyi Bu <yingyi@couchbase.com> 1471667371 -0700
committer Yingyi Bu <buyingyi@gmail.com> 1471673704 -0700

Add Asterix Extension Manager

More extension support is added. A user can now provide implementations
for the IExtension interface which will give them more control over
the behavior of the system and give them the ability to add custom
features.
Initial customizations include:
1. Metadata Tuple Translators
2. Metadata Datasets
3. Query Translators
4. Statement Handlers
5. Lang Compilation Provider

Change-Id: I280268495cc3aad00f898cba21f7299f7120ce5c
Reviewed-on: https://asterix-gerrit.ics.uci.edu/1017
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Till Westmann <tillw@apache.org>
Integration-Tests: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Yingyi Bu <buyingyi@gmail.com>