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-rcppeigen/package.py

@@ -46,5 +46,5 @@ class RRcppeigen(RPackage):
 
     version('0.3.2.8.1', '4146e06e4fdf7f4d08db7839069d479f')
 
-    depends_on('r-matrix', type=nolink)
-    depends_on('r-rcpp', type=nolink)
+    depends_on('r-matrix', type=('build', 'run'))
+    depends_on('r-rcpp', type=('build', 'run'))