Plugin df - reporting both percentage and absolute values
decode_network_values dstype is ordinal value of string literal
fixes StringIO unicode handling in python 2.7
df plugin: Remove trailing white space.
Merge branch 'vbartoni/df'
Merge branch 'fix-dstype-ordinal-decode_network_values' of git://github.com/aelse/collectd
Merge branch 'fix-stringio-python2.7' of git://github.com/aelse/collectd