Commits on Jun 20, 2016

1. loadSymbol: remove RTLD_LOCAL in dlopen …

   Mario Juric notes:
       Otherwise (at least on OS X) when a library opened as such is
       needed later by a different library, its symbols aren't found.
   
       In particular, this was a problem with MKL-enabled numpy on
       anaconda, causing errors such as this (when building ip-diffim):
   
       ====
       ImportError: dlopen(/Users/mjuric/projects/conda-lsst/miniconda/envs/_build/lib/python2.7/site-packages/scipy/linalg/_fblas.so, 2): Symbol not found: ___kmpc_atomic_cmplx4_add
         Referenced from: /Users/mjuric/projects/conda-lsst/miniconda/envs/_build/lib/python2.7/site-packages/scipy/linalg/../../../../libmkl_intel_thread.dylib
           Expected in: flat namespace
            in /Users/mjuric/projects/conda-lsst/miniconda/envs/_build/lib/python2.7/site-packages/scipy/linalg/../../../../libmkl_intel_thread.dylib
       ====
   
       The problem is easy to replicate in general, by importing the
       `_lsstcppimport` module, followed by importing `numpy`.
   
   Removing RTLD_LOCAL fixes this on the Mac, and shouldn't impact Linux
   because it is the default there.

   

   PaulPrice committed Jun 20, 2016
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