Add function to determine if an object file is an executable

Author: Keno

src/ObjFileBase.jl

@@ -88,6 +88,13 @@ Determine whether an object file is a relocatable (.o) object file.
 function isrelocatable
 end
 
+"""
+Determine whether an object file is an executable object file.
+"""
+function isexecutable
+end
+
+
 """
 Turn a section name into the object-file specific naming convention.
 """