oeqa/runtime: add simple test for scons

This test simply compiles a hello world program using scons.

(From OE-Core rev: bf6e3f0f3a7a134e8e3cb16366ef01b8c956e4c8)

Signed-off-by: Tim Orling <timothy.t.orling@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/runtime/files/SConstruct

@@ -0,0 +1 @@
+Program('hello.c')

meta/lib/oeqa/runtime/files/hello.c

@@ -0,0 +1,5 @@
+int
+      main()
+      {
+          printf("Hello, world!\n");
+      }