[fix] replaced file permission attribute with '-'

this is necessary so that the files included in the resulting
rpm are readable and executable by everyone and writable by root
Merge pull request #3 from tkrille/master

[enhancement] configuration flag to ignore all dependencies in wrapper script classpath line
Merge pull request #4 from tkrille/fixing-rpm-file-permissions

[fix] replaced file permission attribute with '-'
[fix] only set default permissions for files in rpm if no explicit permissions have been set
[cleanup] formatting, code style