Makefile check
changed nultiplication to if
Merge pull request #54 from rallenz/master

ex5
Merge branch 'master' into 'master'

ex6

Removed multiplication by binary value, added if condition instead -> noticeable speedup.
Added -DNDEBUG - speedup by a third in some cases. Cheating, though.
Merge branch 'master-gitlab'
Advanced Programming - Excerice 6

submitted by Sascha Baer
Merge branch 'master' of https://github.com/mattmilten/appfs
Fixed my run_check.sh test-script.
Merge pull request #55 from mad-int/master

Advanced Programming - Excerice 6
new method free mem
a bit code cleaning