Update Debian/Ubuntu package dependencies
libboost-thread is no longer needed
remove getceflibs.sh
Merge pull request #730 from makson96/linux1

Little fixes to build_desura.sh
Merge pull request #728 from makson96/ubuntu1

Update DEB package dependencies
Merge pull request #731 from makson96/linux2

Remove getceflibs.sh
CMakeLists.txt: fix some library searching