since the -march=i486 is not supported on PPC, all further compile
checks done in liblangtag's configure break.
So moving the corresponding patch out of the windows patch in a generic
one and also apply that for Mac.

Change-Id: I65716bc9d7ff19976e5e82ae869c7594978e93e3
Reviewed-on: https://gerrit.libreoffice.org/999Reviewed-by: Michael Stahl <mstahl@redhat.com>
Tested-by: Michael Stahl <mstahl@redhat.com>