Merge branch 'VS2015_OM_fix' into 'master'

Update OpenMesh to get VS2015 Update 3 fixes



See merge request !119
10 jobs for master in 78 minutes and 1 second
Status Job ID Name Coverage
  Test
passed #6974
MultiThreads Linux
clang-c++11-Qt4

00:07:11

passed #6978
MultiThreads Linux
clang-c++11-Qt5

00:09:23

passed #6976
MultiThreads Linux
clang-c++98-Qt4

00:06:01

passed #6980
MultiThreads Linux
clang-c++98-Qt5

00:06:59

passed #6981
MultiThreads Linux
cppcheck

00:34:29

passed #6973
Linux
gcc-c++11-Qt4

00:03:34

passed #6977
Linux
gcc-c++11-Qt5

00:04:20

passed #6975
Linux
gcc-c++98-Qt4

00:03:02

passed #6986
Linux
gcc-c++98-Qt5

00:02:58

canceled #6979
Linux
gcc-c++98-Qt5

18:21:45