[opts files] Remove -Wno-packed-bitfield-compat from GXX_WARNING_OPTS

because new gcc do not warn about backed bitfields for our code.
(reviewed by bernd)


git-svn-id: svn://svn.iws.uni-stuttgart.de/DUMUX/dumux/trunk@10095 2fb0f335-1f38-0410-981e-8018bf24f1b0

debug.opts

@@ -4,7 +4,6 @@ GXX_WARNING_OPTS=" \
     -Wmissing-include-dirs \
     -Wcast-align \
     -Wno-sign-compare \
-    -Wno-packed-bitfield-compat \
     -Wno-unused-parameter"
 
 # additional -W flags for g++ which will lead to many warnings in

optim.opts

@@ -4,7 +4,6 @@ GXX_WARNING_OPTS=" \
     -Wmissing-include-dirs \
     -Wcast-align \
     -Wno-sign-compare \
-    -Wno-packed-bitfield-compat \
     -Wno-unused-parameter"
 
 # additional -W flags for g++ which will lead to many warnings in