Fix issue 146

[Anton-4]

Also simplifies http-get example.

[Anton-4]

Segmentation faults are now happening in the examples command, echo, dir, env, file-read, form, hello-world...

❯ valgrind ./examples/hello-world 
==17767== Memcheck, a memory error detector
==17767== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al.
==17767== Using Valgrind-3.18.1 and LibVEX; rerun with -h for copyright info
==17767== Command: ./examples/hello-world
==17767== 
Hello, World!
==17767== Can't extend stack to 0x485d138 during signal delivery for thread 1:
==17767==   no stack segment
==17767== 
==17767== Process terminating with default action of signal 11 (SIGSEGV)
==17767==  Access not within mapped region at address 0x485D138
==17767==    at 0xCCC040: ??? (in /home/username/gitrepos/basic-cli/examples/hello-world)
==17767==    by 0x48D1494: __run_exit_handlers (exit.c:113)
==17767==    by 0x48D160F: exit (exit.c:143)
==17767==    by 0x48B5D96: (below main) (libc_start_call_main.h:74)
==17767==  If you believe this happened as a result of a stack
==17767==  overflow in your program's main thread (unlikely but
==17767==  possible), you can try to increase the size of the
==17767==  main thread stack using the --main-stacksize= flag.
==17767==  The main thread stack size used in this run was 8388608.
==17767== 
==17767== HEAP SUMMARY:
==17767==     in use at exit: 0 bytes in 0 blocks
==17767==   total heap usage: 13 allocs, 13 frees, 3,213 bytes allocated
==17767== 
==17767== All heap blocks were freed -- no leaks are possible
==17767== 
==17767== For lists of detected and suppressed errors, rerun with: -s
==17767== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
Segmentation fault (core dumped)

Building with --linker=legacy does not hit the issue.

[Anton-4]

The segmentation fault is the same thing we encountered here and was already tracked in roc-lang/roc#5924.