Rename the header to avoid collisions

[makortel]

It could be useful to rename the md5.h for something more specific to avoid name collisions in the future. In Code4hep we ran into an issue where some dependencies pulled in libmd that also provides md5.h with incompatible interface and that md5.h was in the (spack-provided) include paths earlier than the CMS' one.

So not a problem in CMS right now, but future-proofing could be useful. In the same spirit moving the code e.g. in edm_md5 namespace would give further protection against name collisions.

[cmsbuild]

cms-bot internal usage

[cmsbuild]

A new Issue was created by @makortel.

@Dr15Jones, @ftenchini, @makortel, @mandrenguyen, @sextonkennedy, @smuzaffar can you please review it and eventually sign/assign? Thanks.

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[smuzaffar]

@makortel , I have opened cms-sw/cmsdist#10825 and cms-sw/cmssw#51818 which

• rename the md.h to edm_md5.h
• add edm_md5 namespace

[makortel]

Thanks @smuzaffar

[makortel]

assign core

[cmsbuild]

New categories assigned: core

@Dr15Jones,@makortel,@smuzaffar you have been requested to review this Pull request/Issue and eventually sign? Thanks