Merge branch 'master' into warnings

7 jobs for warnings in 89 minutes and 36 seconds
Status Job ID Name Coverage
  Test
passed #17581
Apple
Mac-Cpp11

00:50:17

passed #17580
Qt551 VS2013
VS2013-Qt-5.5.1-x64

00:18:16

passed #17579
Qt56 VS2015
VS2015-Qt-5.6.0-x32

00:17:10

passed #17578
Qt56 VS2015
VS2015-Qt-5.6.0-x64

00:20:15

passed #17576
MultiThreads Linux
clang-c++11-Qt5

00:09:33

passed #17577
MultiThreads Linux
cppcheck

00:37:19

passed #17575
Linux
gcc-c++11-Qt5

00:57:59