Merge branch 'PLY_FACE_COLOR' into 'master'

PLY Reader/Writer: Support for face colors (Thanks to Steve and Barb Demlow for the patch)

See merge request !211
21 jobs for OpenMesh-8.0 in 82 minutes and 8 seconds (queued for 2 seconds)
latest
Status Job ID Name Coverage
  Build
passed #68427
VS2015
VS2015-32-bit-shared-apps

00:07:39

passed #68428
VS2015
VS2015-32-bit-shared-no-apps

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passed #68431
VS2015
VS2015-32-bit-static-apps

00:07:41

passed #68432
VS2015
VS2015-32-bit-static-no-apps

00:07:06

passed #68425
VS2015
VS2015-64-bit-shared-apps

00:09:05

passed #68426
VS2015
VS2015-64-bit-shared-no-apps

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passed #68429
VS2015
VS2015-64-bit-static-apps

00:09:08

passed #68430
VS2015
VS2015-64-bit-static-no-apps

00:08:29

passed #68422
VS2017
VS2017-32-bit-shared-no-apps

00:06:22

passed #68424
VS2017
VS2017-32-bit-static-no-apps

00:06:57

passed #68419
Qt5101 VS2017
VS2017-64-bit-shared-apps

00:08:50

passed #68421
VS2017
VS2017-64-bit-shared-no-apps

00:07:31

passed #68420
Qt5101 VS2017
VS2017-64-bit-static-apps

00:08:45

passed #68423
VS2017
VS2017-64-bit-static-no-apps

00:09:02

passed #68413
stretch Linux
clang-c++11

00:19:52

passed #68415
stretch Linux
clang-c++14

00:29:44

passed #68418
stretch Linux
cppcheck

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passed #68412
stretch Linux
gcc-c++11

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passed #68414
stretch Linux
gcc-c++14

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passed #68416
Apple
macos-c++11

00:13:40

passed #68417
Apple
macos-c++98

00:25:32