renamed "isArgumentsObject" to "is_arguments_object"

javascript/extractor/tests/mozilla/output/trap/exprfns.js.trap

@@ -228,7 +228,7 @@ literals("x","x",#20079)
 decl(#20079,#20078)
 #20080=@"var;{arguments};{#20077}"
 variables(#20080,"arguments",#20077)
-isArgumentsObject(#20080)
+is_arguments_object(#20080)
 #20081=*
 exprs(#20081,63,#20075,-2,"(""result"")")
 #20082=@"loc,{#10000},1,14,1,23"
@@ -273,7 +273,7 @@ literals("b","b",#20092)
 decl(#20092,#20091)
 #20093=@"var;{arguments};{#20089}"
 variables(#20093,"arguments",#20089)
-isArgumentsObject(#20093)
+is_arguments_object(#20093)
 #20094=*
 stmts(#20094,1,#20088,-2,"{\n  if  ... )\n  }\n}")
 #20095=@"loc,{#10000},3,13,7,1"
@@ -325,7 +325,7 @@ literals("y","y",#20106)
 decl(#20106,#20105)
 #20107=@"var;{arguments};{#20104}"
 variables(#20107,"arguments",#20104)
-isArgumentsObject(#20107)
+is_arguments_object(#20107)
 #20108=*
 exprs(#20108,63,#20101,-2,"(""other result"")")
 #20109=@"loc,{#10000},5,18,5,33"

javascript/extractor/tests/mozilla/output/trap/guardedCatch.js.trap

@@ -323,7 +323,7 @@ literals("g","g",#20115)
 decl(#20115,#20114)
 #20116=@"var;{arguments};{#20113}"
 variables(#20116,"arguments",#20113)
-isArgumentsObject(#20116)
+is_arguments_object(#20116)
 #20117=*
 stmts(#20117,1,#20111,-2,"{\n\ttry  ... );\n\t}\n}")
 #20118=@"loc,{#10000},1,15,9,1"

javascript/extractor/tests/mozilla/output/trap/odasa-2593.js.trap

@@ -125,7 +125,7 @@ scopenodes(#20039,#20041)
 scopenesting(#20041,#20000)
 #20042=@"var;{arguments};{#20041}"
 variables(#20042,"arguments",#20041)
-isArgumentsObject(#20042)
+is_arguments_object(#20042)
 #20043=*
 stmts(#20043,1,#20039,-2,"{\n    a ... nts);\n}")
 #20044=@"loc,{#10000},1,17,4,1"