Merge pull request #490 from Susurrus/build_fixes

QGCExternalLibs.pri

README.md

libs/qextserialport/qextserialenumerator.h

libs/qextserialport/qextserialenumerator_osx.cpp

libs/qextserialport/qextserialenumerator_unix.cpp

libs/qextserialport/qextserialenumerator_win.cpp

libs/thirdParty/qserialport/COPYING

libs/thirdParty/qserialport/Doxyfile

libs/thirdParty/qserialport/INSTALL

libs/thirdParty/qserialport/LICENSE

libs/thirdParty/qserialport/Mainpage.dox

libs/thirdParty/qserialport/README

libs/thirdParty/qserialport/TODO

libs/thirdParty/qserialport/app.pri

libs/thirdParty/qserialport/base.pri

libs/thirdParty/qserialport/bin/echo_eventmode

libs/thirdParty/qserialport/bin/echo_pollingmode

libs/thirdParty/qserialport/bin/serial2tcpbridge

libs/thirdParty/qserialport/bin/tranceiver

libs/thirdParty/qserialport/conf.pri