Use CONFIG mode to find DART in examples and tutorials

[jslee02]

find_package(DART) uses FindDart.cmake of the DART programming language by default. This PR changes the DART examples and tutorials to use CONFIG mode instead to find our DART using DARTConfig.cmake.

This PR resolves #888.

[codecov]

Codecov Report

Merging #889 into release-6.2 will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff              @@
##           release-6.2     #889   +/-   ##
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  Coverage        50.59%   50.59%           
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  Files              299      299           
  Lines            23408    23408           
  Branches          3015     3015           
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  Hits             11843    11843           
  Misses           10236    10236           
  Partials          1329     1329

[psigen]

Perhaps we should consider if we _really_ want to use the exact name "DART" (as opposed to "DARTSIM" or other minor variation), because `FindDart.cmake` is now distributed _with_ CMake [1], meaning all users will have to manually specify `CONFIG` mode to not have this issue in the future. [1] https://github.com/Kitware/CMake/blob/master/Modules/FindDart.cmake

…

On Sun, May 21, 2017 at 3:56 PM, Jeongseok Lee ***@***.***> wrote: Merged #889 <#889>. — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#889 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ACrOK10hiW4us8DQoJSKM-uuPfUIhSXzks5r8JbSgaJpZM4NhrH1> .

[jslee02]

This might be fine on Linux because Linux is a case-sensitive system (not that the DART language uses "Dart" while we use "DART"). But on macOS this could be an issue as you pointed out.