TBB deprecation messages

[chrisadamsonmcri]

There are numerous TBB (version 2020.1) deprecation messages present while building MIRTK (see below). These don't cause issues now but will probably break in the future.

In file included from /home/addo/MCRIBS/MIRTK/MIRTK/Modules/Common/include/mirtk/Parallel.h:38, from /home/addo/MCRIBS/MIRTK/MIRTK/Modules/Common/include/mirtk/Options.h:26, from /home/addo/MCRIBS/MIRTK/MIRTK/Applications/src/register.cc:21: /usr/include/tbb/task_scheduler_init.h:21:154: note: #pragma message: TBB Warning: tbb/task_scheduler_init.h is deprecated. For details, please see Deprecated Features appendix in the TBB reference manual. 21 | #pragma message("TBB Warning: tbb/task_scheduler_init.h is deprecated. For details, please see Deprecated Features appendix in the TBB reference manual.") | ^ In file included from /home/addo/MCRIBS/MIRTK/MIRTK/Modules/Common/include/mirtk/Parallel.h:49, from /home/addo/MCRIBS/MIRTK/MIRTK/Modules/Common/include/mirtk/Options.h:26, from /home/addo/MCRIBS/MIRTK/MIRTK/Applications/src/register.cc:21: /usr/include/tbb/mutex.h:21:140: note: #pragma message: TBB Warning: tbb/mutex.h is deprecated. For details, please see Deprecated Features appendix in the TBB reference manual. 21 | #prag