Saving a couple of mallocs
Revert "Saving a couple of mallocs"

This reverts commit 57ded0c5459300b77d28ba81662a05d88f74cb85.
Build examples with debug info
Optimizing vector wrapping constructor
Adding test for stl container of vex::vectors

Doesn't seem to trigger the problem mentioned in #25.
Focus on one of utests easily
Added slides from CSE13 talk
Merge branch 'master' of https://github.com/ddemidov/vexcl
Use genfft-generated kernels.
Better performance for radix 5, 7.
Use ordered map in profiler.
tic("b"); toc(); tic("a"); toc(); prints in the correct order.
tic("a"); toc(); tic("a"); toc(); adds the times, counts 2 hits for "a".
Show profile or plan in benchmark
Use specific work group size for kernels.
The recommended minimum seems to be optimal for most cases.
Profile each kernel run for the FFT.
Use smallest radix kernel first
Complete prime factorisation.
In order to move Bluestein into the Cooley-Tukey scheme, so that n=4*29*31 uses radix-2, and Bluestein for n=29, n=31, instead of Bluestein for n=3596 which has a much larger error.
show plan in fft_verify
merge planner classes, not needed
short plan description, dump arrays
use bluestein in cooley-tukey scheme
benchmark powers of 2 and next primes