Don't use messages for errors by default

Use empty string for message property of builtin error objects
by default. Add ERROR_MESSAGES build option.

JerryScript-DCO-1.0-Signed-off-by: László Langó llango.u-szeged@partner.samsung.com

tests/jerry/date-tostring.js

@@ -31,7 +31,6 @@ try
 catch (e)
 {
   assert (e instanceof TypeError);
-  assert (e.message === "Incompatible type");
 }
 
 var date = new Date(0);
@@ -56,7 +55,6 @@ try
 catch (e)
 {
   assert (e instanceof TypeError);
-  assert (e.message === "Incompatible type");
 }
 
 assert (new Date (NaN).toTimeString () == "Invalid Date");
@@ -72,7 +70,6 @@ try
 catch (e)
 {
   assert (e instanceof TypeError);
-  assert (e.message === "Incompatible type");
 }
 
 assert (new Date ("2015-07-16").toISOString () == "2015-07-16T00:00:00.000Z");
@@ -106,7 +103,6 @@ try
 catch (e)
 {
   assert (e instanceof TypeError);
-  assert (e.message === "Incompatible type");
 }
 
 assert (new Date (NaN).toUTCString () == "Invalid Date");
@@ -121,7 +117,6 @@ try
 catch (e)
 {
   assert (e instanceof TypeError);
-  assert (e.message === "Incompatible type");
 }
 
 assert (new Date (NaN).toJSON () == null);

tests/jerry/regression-test-issue-245.js

@@ -21,5 +21,4 @@ try
 catch (e)
 {
   assert (e instanceof SyntaxError);
-  assert (e.message === "Unexpected end of paren.");
 }

tests/jerry/regression-test-issue-316.js

@@ -20,7 +20,6 @@ try {
 catch (e)
 {
   assert (e instanceof TypeError);
-  assert (e.message === "Incomplete RegExp type");
 }
 
 try {
@@ -30,7 +29,6 @@ try {
 catch (e)
 {
   assert (e instanceof TypeError);
-  assert (e.message === "Incomplete RegExp type");
 }
 
 try {
@@ -40,5 +38,4 @@ try {
 catch (e)
 {
   assert (e instanceof TypeError);
-  assert (e.message === "Incomplete RegExp type");
 }