[SCons] Use more generic flag for warning suppression
[SCons] Use more generic flag for warning suppression

Older versions of Clang don't support '-Wno-unused-result'.

git-svn-id: e76dbe14710aecee1ad27675521492cea2578c83@2750 02a645c2-efd0-11dd-984d-ab748d24aa7e

Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn,Cantera/cantera-svn