Adding a temporal energy floor to prevent extremely small values when there's
only one bin in the band.

Using the number of unallocated bytes for coarse quantization and VBR
instead the total number of bytes.

Also a minor cleanup to the recombining/division

Also made the new table an unsigned char array.

Should eventually allow using 8-bit values for the pulse->bits table.

When the pitch flag gets corrupted, make sure that pitch is actually
allowed instead of generating a bogus pitch index and crashing.