#1 File extraction problem

[Damien Brossard]

Files placed at root of the package are not extracted
to the right location when using the default location.

for example : if the package 'pack' contains a file
named '/toto.txt',
and you call npfExtractFile(pack, '/toto.txt')
then the file toto.txt is extracted but not in the current
directory. The file is extracted at root of the current
disk.