Keep the manpages out of the remote git tree as they are build options-dependant

Author: marin-m

.gitignore

@@ -17,6 +17,7 @@ Cargo.lock
 # The following is related to building packages
 vendor/
 repo/
+man/
 .flatpak-builder/
 .cargo/
 

build.rs

@@ -173,6 +173,8 @@ fn main() {
         .join("packaging").join("rootfs")
         .join("usr").join("share").join("man").join("man1");
 
+    std::fs::create_dir_all(&out_dir).unwrap();
+
     glib_build_tools::compile_resources(
         &["src/gui"],
         "src/gui/resources.gresource.xml",