Remove regressions (they were for the resampler)

regression-fixes/1-resampler_unsigned_fix.patch

-diff --git a/libspeex/resample.c b/libspeex/resample.c
-index 4403f78..48ffcef 100644
---- a/libspeex/resample.c
-+++ b/libspeex/resample.c
-@@ -561,10 +561,10 @@ static void update_filter(SpeexResamplerState *st)
-       }
-       for (i=0;i<st->den_rate;i++)
-       {
--         spx_uint32_t j;
-+         spx_int32_t j;
-          for (j=0;j<st->filt_len;j++)
-          {
--            st->sinc_table[i*st->filt_len+j] = sinc(st->cutoff,((j-st->filt_len/2+1)-((float)i)/st->den_rate), st->filt_len, quality_map[st->quality].window_func);
-+            st->sinc_table[i*st->filt_len+j] = sinc(st->cutoff,((j-(spx_int32_t)st->filt_len/2+1)-((float)i)/st->den_rate), st->filt_len, quality_map[st->quality].window_func);
-          }
-       }
- #ifdef FIXED_POINT

regressions

-1: 723f644e09333a0230383eae4af1f3aa3e46e1c3 (r12736): broke resampler badly
-Changed the sign of a bunch of parameters in the API. Tons of signed/unsigned changes in the code as a consequence of that. Hopefully this will be the last change to the API.
-Fixed: 2007-08-11
-