Get Rid of nobuild, nolink, and alldeps (#2765)

* Removing the nobuild, nolink, and alldeps dependency types in favor of being explicit.
* This will help with maintenance going forward, as adding more dependency types won't affect existing declared dependencies in weird ways.
* default deptype is still `('build', 'link')`

var/spack/repos/builtin/packages/r-foreach/package.py

@@ -40,5 +40,5 @@ class RForeach(RPackage):
 
     version('1.4.3', 'ef45768126661b259f9b8994462c49a0')
 
-    depends_on('r-codetools', type=nolink)
-    depends_on('r-iterators', type=nolink)
+    depends_on('r-codetools', type=('build', 'run'))
+    depends_on('r-iterators', type=('build', 'run'))