fixed a common typo in many shell scripts
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
QtCreatorSetup.sh: fixed an issue with relative paths of the compiler when creating QtCreator projects
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/