unity-profile: fix error thrown on some linux systems
no longer use shortdir for pror tmux related functions
path: add home/bin to path in linux systems
setup.sh: fix vim installation
alias: remove ATK and VNL aliases
compilers: only set variables if special compilers exist, otherwise do not export
profile: simplify
unity: source license file if it exists
Merge branch 'master' of https://github.com/scicalculator/Unity-Shell

* 'master' of https://github.com/scicalculator/Unity-Shell:
  unity: load a HOME/.license file if it exists
  setup: fix sh vs. bash problems and force bash script interpretation
  functions: danglin_links
  setup: more careful linker rules and attempt to make directories where possible
  path: fix home/bin in path for linux systems
  update vim

Conflicts:
	misc/path
	setup.sh

path was modified to have better LD_LIBRARY_PATH, which also takes
advantage of QuantumWise libraries if present