fixed a common typo in many shell scripts
GCC setup: added a missing dependency check on wget
GCC installation procedure has been enhanced.Users don't need to modify download links so it ends with '.tar.bz2' anymore.
Bash scripts: introduced a new function to check dependencies.This function is used by setup.sh to ensure that git, make, etc. are available.
README.txt updated; all Copyright notes updated to 2019
fixed an issue in the GCC script (realpath failed)
QtCreatorSetup.sh: fixed an issue with relative paths of the compiler when creating QtCreator projects
gccsetup.sh: initially suggested link directory has been enhanced (now one up from installation directory); link paths are now relative
minor fix to the QTCreatorSetup.sh script
QtCreatorSetup.sh: fixed erroneous paths
minor fix to QtCreatorSetup.sh script
moved the compier/ and ide/ folders to a common folder tools/