Merge branch 'release-1.5'

.gitignore

CHANGELOG.txt

CMakeLists.txt

build_configs/buildconfig_bc2

build_configs/buildconfig_bc2_static

build_configs/darwin_homebrew.txt

build_configs/win32

cmake_support/CopyDependencies.cmake

cmake_support/FindEigen.cmake

cmake_support/FindFFTW.cmake

cmake_support/FindOpenMM.cmake

cmake_support/OST.cmake

deployment/macos/CMakeLists.txt

deployment/macos/Info.plist

examples/code_fragments/mm/1CRN.pdb

examples/code_fragments/mm/ethanol.pdb

examples/code_fragments/mm/ethanol_example.py

examples/code_fragments/mm/ethanol_example_using_topology.py

examples/code_fragments/mm/gb_example.py

examples/code_fragments/mm/gb_example_traj.dcd