Modification of the destructor Revert "Modification of the main by using the class picture and the new definitions of functions"

This reverts commit 01190b232914999247bbd233ff4150c1d27cd5ef.
Modification of the destructor
Addition of ifndef
Merge https://github.com/njaure/gargouille

Conflicts:
	ppm.h
	ppm_function.cpp