disable clangs expansion-to-defined warning
disable clangs expansion-to-defined warning

clang produces many warnings inside boost 1.62 of the following kind:

/ssd/deal-
git/bundled/boost-1.62.0/include/boost/archive/detail/iserializer.hpp:69:7:
warning: macro expansion producing 'defined' has undefined behavior
[-Wexpansion-to-defined]
#if ! DONT_USE_HAS_NEW_OPERATOR
      ^
/ssd/deal-
git/bundled/boost-1.62.0/include/boost/archive/detail/iserializer.hpp:63:12:
note: expanded from macro 'DONT_USE_HAS_NEW_OPERATOR'
        || defined(__SUNPRO_CC) && (__SUNPRO_CC < 0x590)   \
           ^

So I am adding this to DISABLE_EXTRA_DIAGNOSTICS because we can not fix
boost.

naliboff/dealii,naliboff/dealii,danshapero/dealii,sairajat/dealii,EGP-CIG-REU/dealii,EGP-CIG-REU/dealii,kalj/dealii,sairajat/dealii,naliboff/dealii,EGP-CIG-REU/dealii,sairajat/dealii,kalj/dealii,danshapero/dealii,EGP-CIG-REU/dealii,sairajat/dealii,kalj/dealii,EGP-CIG-REU/dealii,naliboff/dealii,danshapero/dealii,naliboff/dealii,danshapero/dealii,sairajat/dealii,sairajat/dealii,danshapero/dealii,sairajat/dealii,danshapero/dealii,kalj/dealii,danshapero/dealii,kalj/dealii,naliboff/dealii,EGP-CIG-REU/dealii,kalj/dealii,kalj/dealii,naliboff/dealii,EGP-CIG-REU/dealii