[fdo-trac] #169: Expression Engine: Allow case-insensitive expression function name processing

[FDO]

#169: Expression Engine: Allow case-insensitive expression function name
processing
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   Reporter:  thomasknoell  |       Owner:  thomasknoell
       Type:  defect        |      Status:  new         
   Priority:  major         |   Milestone:  3.3.0       
  Component:  FDO API       |     Version:  3.2.0       
   Severity:  3             |    Keywords:              
External_id:                |  
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 The processing of an expression containing an expression function is
 issuing an error if the expression function name is not as defined in the
 expression function list. For example, in the expression function list,
 the name of the function to concatenate two strings is defined "Concat".
 If the user would use the term "concat" instead, the Expression Engine
 would issue an exception indicating an unknown function.

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Ticket URL: <http://trac.osgeo.org/fdo/ticket/169>
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