DWDS/Dialing Concordance Code

+ v0.04: CQWith match-ids for ddc-v2.0.38-rc2

+ added m_MatchId field to CQWith and CQueryWithNode: WITH-level match-id clobbers daughters
- re-worked match-id handling to use GetMatchId(), SetMatchId()

+ qcount doc fix

* better compatibility hacks for spaceless count-key hit-ids
- added #define DDC_COUNT_KEY_COMPAT in ConcCommon.h for compatibility during transition to v2.0.38 ; can be removed when transition is complete

+ removed bogus leading globalCountKeyDelim and extraneous space after delimiters in count-keys
- hacked backwards-compatibility code in BranchServer.cpp
* a ddc-2.0.38 branch-server CAN use count-keys from a leaf-server <v2.0.38
* BUT a branch-server <v2.0.38 will NOT use count-keys from a branch-server >=v2.0.38 correctly (first character will be lost)

+ BranchServer compatibility fix for handling ddc <=2.0.37 style count-keys with bogus spaces

+ default arguments for CQSeq::new()

+ CQCount doc fix

+ CQKeys index-name parsing fix

+ v0.03: added support for CQKeys class (requires ddc >= v2.0.38-pre4)