* add FSetInputVariableAttrs

* rename

* Fix warnings from Logging, enable Plan memory to take external memory

* fix external memory id

* fix graph

* add amalgamation

* update target name

* fix error message

* fix

* Add list attr recursive

* fix

* fix glog

* sync logging improvement from dmlc

* Remove backward index, use gradient guessing instead

* minor fix

* bugfix

* Enable optional dependency memory and attr hint

* fix travis

* [SYMBOL] Change list_input->list_input_names, add list_input_variables

* fix

* [OP] Enable register via match tag

* more docs on usage

* [SYMBOL] support control deps in API

* enable more generic tuple list

* fix

* fix

* Allow libaray path to be configurable

* Enable partial shape inference result to be passed via shape

* fix python3

* disallow copy assign in index

* ApplyPass -> ApplyPasses; Refactored infer pass;

* lint fix