link warnings with opusfile PDBs

[rryan]

e.g. ```opusfile.lib(bands.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(bands.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(celt.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(celt.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(celt_decoder.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(celt_decoder.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(celt_lpc.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(celt_lpc.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(cwrs.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(cwrs.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(entcode.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(entcode.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(entdec.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(entdec.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(entenc.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(entenc.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(kiss_fft.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(kiss_fft.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(laplace.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(laplace.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(mathops.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(mathops.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(mdct.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(mdct.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(modes.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(modes.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(pitch.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(pitch.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(quant_bands.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(quant_bands.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(rate.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(rate.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(vq.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(vq.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(pitch_sse.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(pitch_sse.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(x86cpu.obj) : warning LNK4099: PDB 'celt.pdb' was not found with 'opusfile.lib(x86cpu.obj)' or at 'C:\projects\mixxx\win64_build\celt.pdb'; linking object as if no debug info opusfile.lib(bwexpander.obj) : warning LNK4099: PDB 'silk_common.pdb' was not found with 'opusfile.lib(bwexpander.obj)' or at 'C:\projects\mixxx\win64_build\silk_common.pdb'; linking object as if no debug info opusfile.lib(bwexpander_32.obj) : warning LNK4099: PDB 'silk_common.pdb' was not found with 'opusfile.lib(bwexpander_32.obj)' or at 'C:\projects\mixxx\win64_build\silk_common.pdb'; linking object as if no debug info opusfile.lib(CNG.obj) : warning LNK4099: PDB 'silk_common.pdb' was not found with 'opusfile.lib(CNG.obj)' or at