…domized address bits.

- Rewrite split to remove leaks and improve runtime by 6%
- Add free()

This reverts commit bf8ee12.

This reverts commit 84f7360.

Remove cs_malloc() and cs_free().

API change unifies disassembly process. Before, there were two separate
functions to disassemble one instruction at a time in a loop and many
instructions into a dynamic buffer. Commit will introduce user allocatable
buffer that can be used in both situations with one function.

cs_disasm_iter() is a tiny wrapper around cs_disasm().

Updating the use of cs_disasm_iter():

    // old api
    cs_insn *insn = cs_malloc(handle);
    while (cs_disasm_iter(handle, &code, &code_size, &ip, insn)) {
        disassembled_instructions += 1;
    }
    cs_free(insn);

Must be changed to:

    // new api
    cs_buffer *buffer = cs_buffer_new(1); // create buffer with 1 element
    while (cs_disasm_iter(handle, &code, &code_size, &ip, buffer)) {
        cs_insn *insn = &buffer->insn[0]; // get first insn in a buffer
        disassembled_instructions += 1;
    }
    cs_buffer_free(buffer); // free buffer

Updating the use of cs_disasm() is straightforward, just use
cs_buffer_new(0) to create a buffer and pass it to cs_disasm().