Adding standard includes for libraries, executbles, tests, etc.

Packages need almost all of these anyway at some point so they might as well
just be included in the top level package include.  This should help avoid
problems that I have seen on some systems and some versions of CMake where if
you miss an include CMake will do strange things.

Note that I would have liked to have avoiding having to include
TribitsPackageMacros.cmake at all in a package's CMakeLiss.txt file but the
current contents of TribitsAddExecutable.cmake set variables that require
package-level scope.  Hopefully I can clean this up soon.

package_arch/TribitsPackageMacros.cmake

@@ -50,6 +50,13 @@ INCLUDE(PrependGlobalSet)
 INCLUDE(RemoveGlobalDuplicates)
 INCLUDE(TribitsAddOptionAndDefine)
 
+INCLUDE(TribitsLibraryMacros)
+INCLUDE(TribitsAddExecutable)
+INCLUDE(TribitsAddExecutableAndTest)
+INCLUDE(TribitsAddTest)
+INCLUDE(TribitsAddAdvancedTest)
+INCLUDE(TribitsCopyFilesToBinaryDir)
+
 ###
 ### WARNING: See "NOTES TO DEVELOPERS" at the bottom of file!
 ###