Minor boundscheck test refactoring.

Write in a way which makes it more explicit what is inlined vs not inlined.

test/boundscheck.jl

@@ -10,6 +10,12 @@ using Base.Test
     return r
 end
 
+@noinline function A1_noinline()
+    r = 0
+    @boundscheck r += 1
+    return r
+end
+
 function A1_inbounds()
     r = 0
     @inbounds begin
@@ -21,8 +27,8 @@ end
 @test A1() == 1
 @test A1_inbounds() == 0
 
-# test for boundscheck block eliminated one layer deep
-function A2()
+# test for boundscheck block eliminated one layer deep, if the called method is inlined
+@inline function A2()
     r = A1()+1
     return r
 end
@@ -32,8 +38,14 @@ function A2_inbounds()
     return r
 end
 
+function A2_notinlined()
+    @inbounds r = A1_noinline()+1
+    return r
+end
+
 @test A2() == 2
 @test A2_inbounds() == 1
+@test A2_notinlined() == 2
 
 # test boundscheck NOT eliminated two layers deep
 
@@ -50,14 +62,6 @@ end
 @test A3() == 3
 @test A3_inbounds() == 3
 
-@inline B() = A1() + 1
-function A3_inbounds2()
-    @inbounds r = B()+1
-    return r
-end
-
-@test A3_inbounds2() == 3
-
 # swapped nesting order of @boundscheck and @inbounds
 function A1_nested()
     r = 0