Setup for an audio table
Began implementation of tables.

Namely, initialization and sample setting are implemented as of this commit.
Function to clear tables.
Implement Lav_tableGetSample
Add tables.c to the build
Fixed compiler errors introduced by tables.c
Got rid of compiler warnings in tables.c
Preliminary Lav_tableComputeSamples
Minor math fixes.
Began basic table tests
Lav_tableSetSamples takes duration
Finished basic table tests
another math fix
Fixed table test
Fixed the weights in Lav_tableComputeSampleRange
Added check to make sure that destinationLength>0
Another table test fix: added missing abs
Added a missing memcpy in Lav_tableSetSamples
Removed one of the table tests
Greatly simplified the concept of a table.

First, it no longer deals with time, only samples and allowing fractional index.
Second, it removes special cases by internally copying the first sample to an extra slot at the end.