MEME: update to 5.0.2 + compile with mpi support

[abretaud]

• I have read the guidelines for bioconda recipes.
• This PR adds a new recipe.
• AFAIK, this recipe is directly relevant to the biological sciences (otherwise, please submit to the more general purpose conda-forge channel).
• This PR updates an existing recipe.
• This PR does something else (explain below).

[james-chuang]

In this update, many of the "support" tools (e.g. fasta-get-markov and meme2meme) from the MEME Suite are not added to $PATH by conda. I think this is because the executables for these scripts are now in /libexec, whereas they were in /bin in previous versions (4.x.x) of MEME Suite. My understanding is that /libexec is supposed to be for executables called by other programs and not by the end user (https://refspecs.linuxfoundation.org/FHS_3.0/fhs/ch04s07.html), hence why it's not added to $PATH. However, many of these clearly should be in $PATH as they were in previous versions of MEME. Is there some way to resolve this?

[abretaud]

Thanks for reporting the problem @james-chuang, I've made #11379 which should fix the problem

[james-chuang]

Great, thanks for the quick fix!