DWDS/Dialing Concordance Code

+ v2.2.6 release

+ set version = 2.2.6-rc1

- removed hack suppressing initial empty sort-key fields in CDDCBranchServer::GetFirstHitsFromCorpora()
+ hack introduced in v2.1.4 (2017-07-07) as workaround for buggy v2.1.3 empty-field changes
+ appears no longer to be required after disabling COUNT_KEY_COMPAT (i.e. since v2.1.9, 2018-03-08)

+ removed COUNT_KEY_COMPAT macro & related code entirely
- introduced in v2.0.38 (2015-05-20), disabled in v2.1.9 (2018-03-08)

* IndexOneToken(): honor tryFixErrors param for extra columns too

* IndexOneToken(): honor tryFixErrors param for extra columns too

+ preparing for v2.2.5 release

* added new method CStringIndexator::IndexTokenFixLongColumns() for fallback repair of "greedy" tokens at indexing time
+ implicitly called by CStringIndexator::IndexOneToken() for overlong lines if new bool param tryFixErrors is true
+ tryFixErrors param is populated from CConcIndexator::m_bResumeOnIndexErrors on IndexOneToken() calls
+ truncates only "greedy" columns (those using more than MaxLen/nCols bytes)
+ truncates each "greedy" column indepdently, proportionate to its "greediness"
(the number of bytes by which its length exceeds MaxLen/nCols)
+ emits console warnings about truncation of line and each truncated column when invoked

replaced various byte-length constants '4096' with DDC_STATIC_BUFLEN

* Changelog tweaks