Improved mpirsync script to disable strict hostkey checking
Merge pull request #40 from dbickson/master

updated documentation of SGD and bias-SGD and removed unused options
Added ability to signal arbitrary vertices relatively efficiently.
Merge pull request #41 from ylow/master

Improved mpirsync. Engine now permits arbitrary signals in context
Do not directly call fiber-based funcs when ncpu is 1. It causes segmentation fault.
Merge pull request #43 from viirya/dev

Fix segmentation fault when ncpu is set to 1
Resolved issue in likelihood calculation for LDA.  Note that likelihood calculation is relatively slow (costly) and probably should not be enabled by default.
To accelerate likelihood calculations I have added code to precompute the loggamma for a range of common values.
Merge branch 'master' of https://github.com/graphlab-code/graphlab
Merge pull request #44 from jegonzal/lda_likelihood_calculation

Improved Likelihood calculation stability.
fixed accuracy of svd computation of first singular value - thanks to carlos del cacho for bug reporting