Add a regression test for boolean concatenation in strings.

test/mjsunit/bool-concat.js

Index: test/mjsunit/bool-concat.js
diff --git a/test/mjsunit/regress/regress-context-osr.js b/test/mjsunit/bool-concat.js
similarity index 88%
copy from test/mjsunit/regress/regress-context-osr.js
copy to test/mjsunit/bool-concat.js
index b74907de6a5c9530285e96c4b2eb4f9aa59a49e3..1306dcbbbca526481951d0d5e29acbd9414840f3 100644
--- a/test/mjsunit/regress/regress-context-osr.js
+++ b/test/mjsunit/bool-concat.js
@@ -25,15 +25,15 @@
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-"use strict";
-function f() {
-  try { } catch (e) { }
+function format(a) {
+  if (a) {
+    return "X"+true+"Y";
+  } else {
+    return "X"+false+"Y";
+  }
 }
 
-for (this.x = 0; this.x < 1; ++this.x) {
-  for (this.y = 0; this.y < 1; ++this.y) {
-    for (this.ll = 0; this.ll < 70670; ++this.ll) {
-      f();
-    }
-  }
+for (var i = 0; i < 1000; i++) {
+  assertEquals("XtrueY", format(true));
+  assertEquals("XfalseY", format(false));
 }