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/py-periodictable/package.py

@@ -34,8 +34,8 @@ class PyPeriodictable(Package):
 
     version('1.4.1', '7246b63cc0b6b1be6e86b6616f9e866e')
 
-    depends_on('py-numpy', type=nolink)
-    depends_on('py-pyparsing', type=nolink)
+    depends_on('py-numpy', type=('build', 'run'))
+    depends_on('py-pyparsing', type=('build', 'run'))
     extends('python')
 
     def install(self, spec, prefix):