nodeinfo: test more details

Make it obvious why we need Osier's patch in commit 10d9038b
to fix NUMA parsing of an AMD machine with two cores sharing
a socket id.

* tests/nodeinfotest.c (linuxTestCompareFiles): Enhance the test.
* tests/nodeinfodata/linux-nodeinfo-sysfs-test-*-output.txt: Update.

tests/nodeinfodata/linux-nodeinfo-sysfs-test-1-cpu-ppc-output.txt

@@ -1 +1 @@
-CPUs: 2, MHz: 8, Nodes: 1, Cores: 2
+CPUs: 2/2, MHz: 8, Nodes: 1, Sockets: 1, Cores: 2, Threads: 1

tests/nodeinfodata/linux-nodeinfo-sysfs-test-1-cpu-x86-output.txt

@@ -1 +1 @@
-CPUs: 2, MHz: 2800, Nodes: 1, Cores: 2
+CPUs: 2/2, MHz: 2800, Nodes: 1, Sockets: 1, Cores: 2, Threads: 1

tests/nodeinfodata/linux-nodeinfo-sysfs-test-2-cpu-x86-output.txt

@@ -1 +1 @@
-CPUs: 2, MHz: 800, Nodes: 1, Cores: 2
+CPUs: 2/2, MHz: 800, Nodes: 1, Sockets: 1, Cores: 2, Threads: 1

tests/nodeinfodata/linux-nodeinfo-sysfs-test-3-cpu-x86-output.txt

@@ -1 +1 @@
-CPUs: 48, MHz: 2100, Nodes: 1, Cores: 12
+CPUs: 48/48, MHz: 2100, Nodes: 1, Sockets: 4, Cores: 12, Threads: 1