DWDS/Dialing Concordance Code

use document container (a new layer): can be tar, stdin or file, add tests for tar-file

use exceptions in ConcIndexator.cpp

delete empty lines

delete unused source code

create class CConcordance (for the querying stage), let CConcIndexator be only for indexing stage

move ConcIndexatorInvoker to a separate file

CreateMorphIndex to a separate file

move InitConcordDicts() to InitDicts.cpp: Makefile.am

move InitConcordDicts() to InitDicts.cpp

run ddc_xml in many threads