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Apply band caps to the band allocation table.

The average caps over all values of LM and C are well below the
 target allocations of the last two modelines.
Lower them to the caps, to prevent hitting them quite so early.
This helps quality at medium-high rates, in the 180-192 kbps range.

--- a/libcelt/modes.c

+++ b/libcelt/modes.c

@@ -80,8 +80,8 @@

 152,145,138,132,123,117,111,105, 98, 92, 86, 80, 74, 67, 61, 55, 49, 43, 36, 20,  1,

 162,155,148,142,133,127,121,115,108,102, 96, 90, 84, 77, 71, 65, 59, 53, 46, 30,  1,

 172,165,158,152,143,137,131,125,118,112,106,100, 94, 87, 81, 75, 69, 63, 56, 45, 20,

-200,200,200,200,200,200,200,200,198,193,188,183,178,173,168,163,158,153,148,143,120,

-255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,

+200,200,200,200,200,200,200,200,198,193,188,183,178,173,168,163,158,153,148,129,104,

+255,255,255,255,255,255,255,255,255,255,255,255,255,255,255,251,251,239,204,129,104,

 };

 #endif