rust/chg/build.rs

rust-chg: collect server flags from command arguments

This is the reimplementation of testsensitiveflag() and setcmdserverargs()
of chg.c.

Differential Revision: https://phab.mercurial-scm.org/D8380

extern crate cc;

fn main() {
    cc::Build::new()
        .warnings(true)
        .file("src/sendfds.c")
        .file("src/sighandlers.c")
        .compile("procutil");
}