bugfix headers, dance around identity fotis@cern.ch (NTUA)

Signed-off-by: Fotis Georgatos <fotis@cern.ch>
add FG, in relation to EASYBLOCK_CLASS_PREFIX & STRING_ENCODING_CHARMAP

Signed-off-by: Fotis Georgatos <fotis@cern.ch>
Merge pull request #1105 from fgeorgatos/bugfix_headers_fotis_cern_ch

bugfix headers, dance around identity fotis@cern.ch