Alter calls to make to avoid sending '-j1' argument.
Normalize install script, remove /usr/local pre-install cleanup.
Merge pull request #4 from pmienk/master

install script normalization
Correct pkg-config file.
Merge pull request #5 from pmienk/master

Correct pkg-config file.
Merge pull request #3 from evoskuil/master

VC suppress warnings and update protobuf dependency.