[ET Trac] [Einstein Toolkit] #1518: Replace internal expression parser with Piraha

[Einstein Toolkit]

#1518: Replace internal expression parser with Piraha
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  Reporter:  rhaas   |       Owner:  sbrandt            
      Type:  defect  |      Status:  review             
  Priority:  minor   |   Milestone:                     
 Component:  Cactus  |     Version:  development version
Resolution:          |    Keywords:  postrelease        
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Comment (by eschnett):

 While we are discussing style questions -- `strlen` returns `size_t`, not
 `unsigned int`.

 Yes, we should replace `Util_StrCmpi` by `strcasecmp`. In fact, we should
 make the former be just a wrapper around the latter.

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Ticket URL: <https://trac.einsteintoolkit.org/ticket/1518#comment:25>
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