Update libgit2#1298

Merged

carlosmn merged 4 commits intolibgit2:masterfrom

ethomson:libgit2_update

Apr 12, 2016

Commits on Apr 3, 2016

Update to NativeBinaries 1.0.137
Edward Thomson
committed
GitMergeOpts: include default driver
Edward Thomson
committed
Use `git_blob_fromstream` instead of `fromchunks`
Edward Thomson
committed
Update changelog with new native binary information
Edward Thomson
committed