YAMP 1.2.3 (Final)

Imprved some functions (additional check of integer). Reordered
size,length,dim and distinguished between printf and notify.
Improved unary operaor, fixed a bug related to deseralization and added
some functions.
Merge branch 'master' of https://github.com/FlorianRappl/YAMP
Updated portable projects to 1.2.3 final