Fixed error in OpenCL MonteCarloBarostat in double precision
Merge branch 'master' of https://github.com/peastman/openmm
Merge branch 'master' of https://github.com/SimTk/openmm
Merge pull request #554 from peastman/master

Fixed error in OpenCL MonteCarloBarostat in double precision
Fixed anisotropy for terminal residues
Merge pull request #556 from peastman/master

Fixed anisotropy for terminal residues
Preliminary support for Chrome portable native client
Disable OpenCL by default on Macs
Very minor optimization to DIIS
Consolidated logic for determining if vector instructions are supported
Fixed compilation error on Android
Merge pull request #557 from peastman/apple

Disable OpenCL by default on Macs
Merge pull request #558 from peastman/master

Very minor optimization to DIIS
Created PNaCl implementation of vector instructions (not yet optimized!)
Modified test case to work on ARM
CPU platform works on PNaCl
Bug fixes to PNaCl vectors
Updated version number to 6.1
Merge pull request #563 from peastman/master

Updated version number to 6.1
Fixes to user guide