Repair support for no-byte-addressable OpenCL devices

Hello, I am posting this here and not at the mailing list because I think this can be a bug. I used the command suggested by @solardiz john 343.in --format=wpapsk-openc, I get the following (I am copying from my cmd window as much as allowed as there are lines of text before this which are not showing, probably because there are too many lines in total):

"kernels\opencl_sha2_ctx.h", line 179: error: write to < 32 bits via pointer
          not allowed unless cl_khr_byte_addressable_store is enabled
                PUT_UINT32BE(ctx->state[5], output, 20);
                ^

Edit by @solardiz: many occurrences of the above dropped.

Error limit reached.
100 errors detected in the compilation of ".\OCL9868.tmp.cl".
Compilation terminated.

Internal error: clc compiler invocation failed.

Error building kernel kernels/wpapsk_kernel.cl. DEVICE_INFO=4194826
0: OpenCL CL_BUILD_PROGRAM_FAILURE (-11) error in opencl_common.c:1386 - clBuild
Program

C:\john\run>

Reproduce the command shown in the report and inspect kernels/opencl_sha2_ctx.h, kernels/wpapsk_kernel.cl, and opencl_common.c around line 1386. Trace the repeated byte-addressable-store compilation errors, then verify that the affected OpenCL kernel builds and runs on devices without that extension.