Fixes x86_64 target for Solaris (#261)

Co-authored-by: petr sumbera - Sun Microsystems - Prague Czech Republic <[email protected]>

Author: psumbera

src/lib.rs

@@ -400,7 +400,7 @@ impl Build {
             "x86_64-unknown-openbsd" => "BSD-x86_64",
             "x86_64-unknown-netbsd" => "BSD-x86_64",
             "x86_64-uwp-windows-msvc" => "VC-WIN64A-UWP",
-            "x86_64-sun-solaris" => "solaris64-x86_64-gcc",
+            "x86_64-pc-solaris" => "solaris64-x86_64-gcc",
             "wasm32-unknown-emscripten" => "gcc",
             "wasm32-unknown-unknown" => "gcc",
             "wasm32-wasi" => "gcc",