Tweaks to the generated VDBE code to make it a little easier to follow.
Fix a harmless compiler warning in VS2013.
Fix a harmless compiler warning in VS2013.
Change the OP_Found opcode so that it expands zero-blobs prior to comparing
them.  Fix for ticket [fccbde530a6583b]
Do away with the "multi-register pseudo-table" abstration.  Instead, just
use an OP_SCopy to load results directory from the result registers of
the co-routine.
Add a new "testset" to the speedtest1 program:  The sudoku solver.
Add the Mandelbrot Set testcase to the "cte" testset of speedtest1.