Bsd sysroot

[ManuLinares]

• add c3c ... --bsd-sysroot <DIR> for cross-compilation
• update miniz to latest (sorry, not needed but nice for security purposes)
• added zlib_compat.c shim to provide the zlib functions needed for LLVM
  zlib dependency. This completely replaces zlib dependency from LLVM, (except libcurl still links to zlib dynamically, this is a maybe TODO: build our own libcurl)

NOTE: https://github.com/c3lang/llvm-for-c3/releases/tag/llvm_22.1.8 need to be made "Latest Label" release and revert or remove test llvm with zlib before merging

---

MacOS:

$ llvm-otool -L c3c
c3c:
	/usr/lib/libcurl.4.dylib (compatibility version 7.0.0, current version 9.0.0)
	/usr/lib/libxar.1.dylib (compatibility version 1.0.0, current version 1.3.0)
	/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1351.0.0)
	/usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 1900.180.0)

---

Windows:

$ objdump -p c3c.exe | grep 'DLL Name'
	DLL Name: WINHTTP.dll
	DLL Name: ADVAPI32.dll
	DLL Name: ntdll.dll
	DLL Name: KERNEL32.dll
	DLL Name: OLEAUT32.dll

[lerno]

Thank you!