1) I modified libsimV2 to build both a static and dynamic library (simV2
   and simV2dyn) and then modified the python binding to use the dynamic
   library. With this change it is no longer necessary to manually set the
   VISIT_C_FLAGS and VISIT_CXX_FLAGS to include -fPIC since CMake adds the
   flags if building a shared library. This resolves #1288.

2) I modified build_visit to no longer add -fPIC to the VISIT_C_FLAGS
   and VISIT_CXX_FLAGS. I then removed -fPIC from the VISIT_C_FLAGS and
   VISIT_CXX_FLAGS in all the config site files.



git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/branches/2.6RC/src@19902 18c085ea-50e0-402c-830e-de6fd14e8384

I enhanced the xdmf_writer library to handle outputting unstructured 
grids in parallel. I also added an example of writing an unstructured 
grid in parallel.



git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/branches/2.6RC/src@19911 18c085ea-50e0-402c-830e-de6fd14e8384
merge from trunk for memory leaks

git-svn-id: svn+ssh://portal-auth.nersc.gov/project/projectdirs/visit/svn/visit/branches/2.6RC/src@19935 18c085ea-50e0-402c-830e-de6fd14e8384