[Development] All deprecation warnings are P1 for 5.13.0

[Thiago Macieira]

Commit 7847e6bc02552fa7fc7f518e5cb3336f667b5a6d in qtbase madee the 
QT_DEPRECATED and QT_DEPRECATED_X warnings on by default in Qt builds. That 
means we started seeing lots of warnings that weren't there in 5.12.

ALL such warnings must be fixed by 5.13.0 release. Please treat them as P1 (or 
P½ because flooding my output while building makes finding legitimate warnings 
and errors more difficult).

I've begun reporting in Gerrit on the commits that added the deprecation, if 
that commit was recent enough. But there's new code using <QtAlgorithms> years 
after those functions were deprecated...

By beta, those that aren't fixed will get P1 bug reports in JIRA.
-- 
Thiago Macieira - thiago.macieira (AT) intel.com
  Software Architect - Intel System Software Products