Make logging file a sample

Makes it easier to include a customized version in config rpms
SpreadsheetLoader: store enum states in defined order
Yamcs v0.26.2
fixed the parameters passing through hornetq
Yamcs v0.26.3
Prepare 0.26.4 builds
Merge branch 'stable' into master
Merge pull request #53 from fqqb/master

Backport stable changes to master branch