LoKiGen: add several new symbols for specific status of HepMC-particles (@ibelyaev)

Cherry-picked from !1399 (merged) on run2-patches

changed title from LoKiGen: add several new symbols for specific status of HepMC-particles (@belyaev) to LoKiGen: add several new symbols for specific status of HepMC-particles (@ibelyaev)

• [2018-07-14 00:13] Validation started with lhcb-lcg-dev3#585
• [2018-07-14 00:13] Validation started with lhcb-head#1918
• [2018-07-14 00:16] Validation started with lhcb-gaudi-head#1930
• [2018-07-14 00:16] Validation started with lhcb-lcg-dev4#585
• [2018-07-14 00:17] Validation started with lhcb-tdr-test#214

merged

mentioned in commit cf5b0b60

mentioned in commit Gauss@c9eb5354