PR gas/3041

PR gas/3041
* config/tc-m68k.c (relaxable_symbol): Make sure that the correct addend is stored for relocs against weak symbols.
    (md_apply_fix): So not loose track of addend for relocs against weak symbols.
* testsuite/gas/m68k/p3041.s: New test case.
* testsuite/gas/m68k/p3041.d: New expected disassembly.
* testsuite/gas/m68k/all.exp: Run new test for m68k-*-netbsd toolchains.
    Only run arch-cpu-1 test for ELF based toolchains.

    Tidy ups for m68k-netbsd gas toolchain:
* testsuite/gas/m68k/cpu32.d: Allow for extra text after expected disassembly.
* testsuite/gas/m68k/mcf-trap.d: Allow for alternative trap mnemonics.
* testsuite/gas/m68k/br-isab.d: Fix name of test.
* testsuite/gas/m68k/br-isac.d: Fix name of test.