ID 393167 - Custom plug-ins fail to load in 4.5v1

Problem summary
Custom plug-ins fail to load in 4.5v1 caused by the following symlinks:

Mari4.5v1/3rdParty/lib

libIex.so

libIexMath.so

libIlmImf.so
libIlmThread.so

libImath.so

Customer reported version

4.5v1

Customer reported platform

Steps to reproduce (reproduced by the development team)

Expected behaviour
The plug in to load same as in 4.2v2

Actual behaviour
Missing symbols error

Workaround
Unknown.

Reproduced by the development team

This bug has been reproduced in:
4.5v1 - regression

Earliest version tested
4.2v2 - This issue no longer appears in this version and has regressed