Fixed charset setting for checkstyle.
Fixed charset setting for checkstyle.

Checkstyle should not rely on the file.encoding property but always use
UTF-8.
cboehme/metafacture-core,culturegraph/metafacture-runner,metafacture/metafacture-core,guenterh/nlRunnerAdvanced,guenterh/linked.swissbib.mf,hbz/metafacture-core,hbz/metafacture-core,guenterh/mfRunnerPlayBox,cboehme/metafacture-core,hbz/metafacture-core,guenterh/linked.swissbib.mf,culturegraph/metafacture-core,guenterh/nlRunnerAdvanced,culturegraph/metafacture-runner,guenterh/nlRunnerAdvanced,culturegraph/metafacture-core,metafacture/metafacture-core,guenterh/linked.swissbib.mf,culturegraph/metafacture-runner,metafacture/metafacture-core,guenterh/mfRunnerPlayBox,guenterh/mfRunnerPlayBox,cboehme/metafacture-core,culturegraph/metafacture-core,cboehme/metafacture-core