Merge pull request #318 from jeffdonahue/blob-copy-by-reference
authorEvan Shelhamer <shelhamer@imaginarynumber.net>
Sun, 13 Apr 2014 01:40:08 +0000 (18:40 -0700)
committerEvan Shelhamer <shelhamer@imaginarynumber.net>
Sun, 13 Apr 2014 01:40:08 +0000 (18:40 -0700)
add Share{Data,Diff} methods to blobs to enable "virtual" copies

- reduce operations by not copying values
- spare memory by shared_ptrs
- simplify SplitLayer logic


Trivial merge