update gitignore and sync_file_list doc

.gitignore

@@ -1,2 +1,4 @@
 /target
-.DS_Store
+.DS_Store
+*.jar
+**/*/android

lib/libdl.txt

@@ -0,0 +1,3 @@
+git clone https://github.com/skylot/jadx.git
+cd jadx
+./gradlew dist

src/firmware/xbuilder.rs

@@ -4,7 +4,7 @@
 use std::fs::File;
 
 use chrono::{DateTime, Utc};
-use rayon::iter::{ParallelBridge, ParallelIterator};
+use rayon::iter::{IntoParallelIterator, ParallelBridge, ParallelIterator};
 use tar::Archive;
 
 use crate::recipe_functions::common::{self, EnumAsValue};
@@ -281,7 +281,7 @@ impl XBuilder {
         self.base = Some(base);
     }
 
-    /// get last commit that should add to file
+    /// get file from commit(s) that should be added to newer firmware file
     pub fn sync_file_list(&mut self) -> Vec<String> {
         let mut result = Vec::new();