solaris: Skip fexecve in tests

Tests do not pass on the 0.2 branch. See
#1272.

Author: tgross35

libc-test/build.rs

@@ -1064,6 +1064,9 @@ fn test_solarish(target: &str) {
             // const-ness issues
             "execv" | "execve" | "execvp" | "settimeofday" | "sethostname" => true,
 
+            // FIXME(1.0): https://github.com/rust-lang/libc/issues/1272
+            "fexecve" => true,
+
             // Solaris-different
             "getpwent_r" | "getgrent_r" | "updwtmpx" if is_illumos => true,
             "madvise" | "mprotect" if is_illumos => true,