Added meteo.txt
Redefined prototype delete
Make delete a procedure, error handling
Added constant
Quelque modif dans le météo et ajout d'un define dans global.h (à tester)
Locking check not working, but server correctly send ATIS
Modified Cleanup to adapt new implementation
Merge branch 'work_srozen' of https://github.com/yrmt/OS into work_srozen
Removed MSG_SIZE cst in ATIS array