freebsd adding execvpe support from 14.1 release

(backport <#3745>)
[resolve conflicts - Trevor]
(cherry picked from commit 67d062f)

libc-test/build.rs

@@ -2575,6 +2575,7 @@ fn test_freebsd(target: &str) {
         // skip those that are manually verified
         match name {
             // FIXME: https://github.com/rust-lang/libc/issues/1272
+            // Also, `execvpe` is introduced in FreeBSD 14.1
             "execv" | "execve" | "execvp" | "execvpe" | "fexecve" => true,
 
             // The `uname` function in the `utsname.h` FreeBSD header is a C

libc-test/semver/freebsd.txt

@@ -1870,6 +1870,7 @@ eui64_hostton
 eui64_ntoa
 eui64_ntohost
 exect
+execvpe
 execvP
 explicit_bzero
 extattr_delete_fd

src/unix/bsd/freebsdlike/freebsd/mod.rs

@@ -5648,6 +5648,12 @@ extern "C" {
     ) -> ::c_int;
     pub fn closefrom(lowfd: ::c_int);
     pub fn close_range(lowfd: ::c_uint, highfd: ::c_uint, flags: ::c_int) -> ::c_int;
+
+    pub fn execvpe(
+        file: *const ::c_char,
+        argv: *const *const ::c_char,
+        envp: *const *const ::c_char,
+    ) -> ::c_int;
 }
 
 #[link(name = "memstat")]