Update .gitignore

Add info about requirements

.gitignore

@@ -2,4 +2,4 @@
 **/*.rs.bk
 /Cargo.lock
 /rust_dos.com
-rust.kex
+*.kex

Cargo.toml

@@ -2,7 +2,7 @@
 name = "kos"
 version = "0.1.0"
 authors = ["Kitsu <mail@kitsu.me>", "Sweetbread"]
-edition = "2018"
+edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
@@ -19,6 +19,6 @@ opt-level = "z"
 lto = "thin"
 
 [dependencies]
-cstr_core = { version = "0.2.4", default-features = false, features = ["nightly"] }
+cstr_core = { version = "0.2.6", default-features = false, features = ["nightly"] }
 
 [build-dependencies]

Makefile.toml

@@ -18,4 +18,4 @@ args = ["build", "@@remove-empty(RELEASE_FLAG)"]
 [tasks.example]
 command = "cargo"
 args = ["objcopy", "@@remove-empty(RELEASE_FLAG)", "--example", "${@}", "--", "-O", "binary", "--strip-all", "${@}.kex"]
-#install_crate = { crate_name = "cargo-binutils", binary = "rust-objcopy", test_arg = ["--help"] }
+# install_crate = { crate_name = "cargo-binutils", binary = "rust-objcopy", test_arg = ["--help"] }

README.md

@@ -1,7 +1,8 @@
 # Rust library for KolibriOS
 
 Project uses [cargo-make](https://github.com/sagiegurari/cargo-make) for building steps.
+You need to install cargo-binutils: `cargo install cargo-binutils` and llvm-tools-preview: `rustup component add llvm-tools-preview` to make it work.
 Also you need a working [FASM](https://flatassembler.net/download.php).
 
-Once installed building is trivial then: `cargo make --profile production <example name>` produces
+Once installed building is trivial then: `cargo make --profile production example <example name>` produces
 a ready-to-use binary at root.

i686-kolibri.json

@@ -1,7 +1,7 @@
 {
     "arch": "x86",
     "cpu": "pentium",
-    "data-layout": "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-f64:32:64-f80:32-n8:16:32-S128",
+    "data-layout": "e-m:e-p:32:32-p270:32:32-p271:32:32-p272:64:64-i128:128-f64:32:64-f80:32-n8:16:32-S128",
     "dynamic-linking": false,
     "executables": true,
     "has-rpath": true,