Add detection of compiler bug.

src/template/unixware

 if test "$GCC" = yes; then
   THREAD_CPPFLAGS="-pthread"
 else
-# the -Kno_host is temporary for a bug in the compiler.  See -hackers
-# discussion on 7-8/Aug/2003.
-# when the 7.1.3UP3 or later compiler is out, we can do a version check.
-  CFLAGS="-O -Kinline,no_host"
+  # The -Kno_host is for a bug in the compiler.  See -hackers
+  # discussion on 7-8/Aug/2003.
+  cat >conftest.c <<__EOF__
+extern char *strcpy(char *, const char *);
+
+static void f(char *p, int n){
+        strcpy(p+n,"");
+}
+void g(void){
+        f(0, 0);
+}
+__EOF__
+
+  if $CC -c -Kinline conftest.c >conftest.err 2>&1; then
+    CFLAGS="-O -Kinline"
+  else
+    CFLAGS="-O -Kinline,no_host"
+  fi
+  rm -f conftest.*
+
   THREAD_CPPFLAGS="-K pthread"
 fi