MXExecutorSimpleBindEx for backward compatability

[eric-haibin-lin]

added MXExecutorSimpleBindEx since perl package is already using MXExecutorSimpleBind

[sergeykolychev]

@eric-haibin-lin Thank you.
But if you prefer I can work on patch over weekend for the perl side to apply on your 'sparse' branch that will just jam nulls into these variables for now.
Let me know.

[reminisce]

I agree that making the simple bind c-api consistent between front-end languages is more preferable.

[eric-haibin-lin]

@sergeykolychev sparse tensor PR is a huge one. I think it will take a while before the sparse branch get fully reviewed and merged to master. For now I'm fine with an cpi compatible with perl and mark the old one deprecated. After perl moved from MXExecutorSimpleBind to MXExecutorSimpleBindEx, we can remove MXExecutorSimpleBind.

[eric-haibin-lin]

@sergeykolychev Oh I misunderstood your message. I thought you're going to make the change to master branch. If you can change the perl binding in sparse branch to use the modified simple_bind c_api with nulls, that will be great. Let me know when you have time to do this and i can close this PR

[sergeykolychev]

@eric-haibin-lin I'll do it tomorrow

[eric-haibin-lin]

awesome thank you very much!

[sergeykolychev]

@eric-haibin-lin
Can't do it easily, the sparse branch is very old and the perl state is as of May 14
Are you planning to merge master into sparse anytime soon ? If that is done I can fix perl in couple of hours after that.

[eric-haibin-lin]

@sergeykolychev could you make a PR to this branch?
https://github.com/eric-haibin-lin/mxnet/tree/sparse

[sergeykolychev]

@eric-haibin-lin Ok, this branch is much better, will work on it this evening.

[sergeykolychev]

@eric-haibin-lin eric-haibin-lin#135