Proto commits in vertica/DistributedR

These 16 commits are when the Protocol Buffers files have changed:

Commit:8917369
Author:Shreya Prasad

Merge with master

The documentation is generated from this commit.

Commit:947934d
Author:Edward Ma
Committer:Edward Ma

partitionsize() for flex objects now uses metadata from the master node. note that array.psizes() may currently be somewhat redundant with array.dims(), until the dims() workaround is resolved.

Commit:0394129
Author:sprasad

Fixing a bug with dframe/dlist composite arguments to return correct value

Commit:579c2ad
Author:sprasad

Merge with master

Commit:6ecb094
Author:sprasad

Remove redundant unserialize for creating composite and code cleanup

Commit:86f9a17
Author:sprasad

Master waits for worker metadata update to be complete.

Commit:72499f9
Author:sprasad

Bug fixes and some cleanup

Commit:63602b2
Author:sprasad

Fix parallel persist.

Commit:a25bf91
Author:sprasad

Fix bug in exec/persist/clear. Deterministic seq dobject partitions in executors

Commit:1944aaf
Author:Jorge Martinez

Change dir structure to make DR installable from CRAN/Github. DISTR-910

Commit:d1e506c
Author:sprasad

Syncing code change for executor storage layer

Commit:77f0b6c
Author:sprasad

Sync to make Github current with Distributed R development

Commit:2d00c8a
Author:Shreya Prasad
Committer:Shreya Prasad

Release Distributed R version 1.1.0

Commit:a25bc07
Author:Shreya Prasad

Release DistributedR version 1.2.0

Commit:77d7a03
Author:shreya2k7

Upgrade DistributedR to release version 1.0.0

Commit:dc814f0
Author:VinXu123

Initial checkin