[C++][Gandiva] Support function aliases #22306
Description
This allows linking of several external names to the same precompiled function.
For example, 'mod', 'modulo' can be used to access the mod function
Reporter: Prudhvi Porandla / @pprudhvi
Assignee: Prudhvi Porandla / @pprudhvi
PRs and other links:
Note: This issue was originally created as ARROW-5892. Please see the migration documentation for further details.