[tests] test basic network operations
[tests] add suppression for forced error
remove windows build related file on make clean
2.7.1 to 2.8
Merge pull request #264 from ddpbsd/README.md

Update version in README.md from 2.7.1 to 2.8
Merge pull request #261 from cgzones/os_net_unittest

os net unit tests
Merge pull request #262 from cgzones/windows

remove windows build related file on make clean