Problem: implicit dependency on czmq
Problem: implicit dependency on czmq

Solution: copy minimal set of czmq_prelude.h to generated code

1.) declare *public* __WINDOWS__ macro for function export symbols
2.) include stdib.h, stdio.h, string.h and assert.h for all source
    files
3.) define streq/strneq and zmalloc macros for all source files

zeromq/zproject,zeromq/zproject,zeromq/zproject