Started migration to libotr v4.0
OTR plugin Qt4->Qt5
Merge branch 'master' of https://github.com/euroelessar/qutim
Reference internal jreen
Added QT5 required macros
FIX: assert failure on message send. Apparently fragmentation is not setup correctly, using default libotr v3 behavoir
Enable OTR, disable Yandex.Narod
Added create_instag callback and machinery
Various fixes related to instance tags:
* get_instag(): return meta OTRL_INSTAG_BEST instead of creating new instag
* otrl_context_find_v3(): always use OTRL_INSTAG_BEST
* OtrInternal ctor: use correct file name to load instance
Fixed libotr flags: OTRL_POLICY_REQUIRE_ENCRYPTION -> OTRL_POLICY_ALWAYS
Revert Yandex.Disk back
Merge pull request #299 from mborodin/master

[OTR] Ported to libotr4 and Qt5