Add support for illumos/solaris

Author: papertigers

src/stack/unix.rs

@@ -12,15 +12,19 @@ use super::SysStack;
     target_os = "openbsd",
     target_os = "macos",
     target_os = "ios",
-    target_os = "android"
+    target_os = "android",
+    target_os = "illumos",
+    target_os = "solaris"
 ))]
 const MAP_STACK: libc::c_int = 0;
 
 #[cfg(not(any(
     target_os = "openbsd",
     target_os = "macos",
     target_os = "ios",
-    target_os = "android"
+    target_os = "android",
+    target_os = "illumos",
+    target_os = "solaris"
 )))]
 const MAP_STACK: libc::c_int = libc::MAP_STACK;