New function StoreRunMetadataFile added to preprocessor and Shuttle interface

New function StoreRunMetadataFile added to preprocessor and Shuttle interface
This function can be used by GRP only. It stores raw data tags merged file to the
raw data folder (e.g. /alice/data/2008/LHC08a/000099999/Raw).

KNOWN ISSUES:

1. Shuttle cannot write to /alice/data/ because it belongs to alidaq. Tag file is stored in /alice/simulation/... for the time being.
2. Due to a bug in TAlien::Mkdir, the creation of a folder in recursive mode (-p option) does not work. The problem
has been corrected in the root package on the Shuttle machine.