DWDS/Dialing Concordance Code

* size_t vs DWORD tweaks for 64-bit systems (kaskade)

+ fixed size_t remapping in QCount.cpp

v2.0.35: fixed bug in optimized count(*) evaluation producing garbage and sometimes segfaults
whenever ix->GetSourceFilesCount() was greater than ix->GetCorpusFilesCount();
in particular whenever empty source-files were dropped during the indexing stage (e.g. kern)
+ upgraded count datatype to size_t in BranchServer.(h|cpp) : avoid integer overflow

+ tagged v2.0.34

* updated docs for v2.0.34

* updated docs for v2.0.34

+ optimized evaluation of count(*) queries using only file-based filters (no #left,#right,#mid, or #size)

+ optimized evaluation of simple count(*) queries (fixes mantis bug #706)
- TODO: allow query-filters in optimized count()-query evaluation (#has_field, etc)

+ removed branch ddc-2.0.34-pre2+matchIds after merging into trunk

+ merged -r 333:336 svn+ssh://mukau@.../p/ddc-concordance/code/ddc/branches/ddc-2.0.34-pre2+matchIds .
+ merged -r 337:340 svn+ssh://mukau@.../p/ddc-concordance/code/ddc/branches/ddc-2.0.34-pre2+matchIds .