tests: reduce length of nodeinfodata test names

Commit ddd6bef4 switched to the ustar format to fix an issue where
'make dist' fails to create a tarball because we have files with
relative names longer than 100 bytes by the time you include a
'libvirt-0.9.13' prefix.  Unfortunately, even with ustar format,
the use of 'tar -ch' tries to convert symlinks to hard links,
also with a name too long (omitting the -h works, but automake
automatically passes -h); such symlinks were added in commit
6dcf98c, which resulted in 'make dist' breaking again.  The
solution is to rename the offending symlinks to something shorter,
by shortening the entire nodeinfodata naming scheme.

* tests/nodeinfotest.c (mymain): Shorten test names.
(linuxTestNodeInfo): Accommodate new names.
* tests/nodeinfodata/*: Rename files accordingly.

tests/nodeinfodata/linux-x86-test2.cpuinfo

@@ -0,0 +1,52 @@
+processor	: 0
+vendor_id	: GenuineIntel
+cpu family	: 6
+model		: 23
+model name	: Intel(R) Core(TM)2 Duo CPU     T9600  @ 2.80GHz
+stepping	: 10
+microcode	: 0xa0b
+cpu MHz		: 800.000
+cache size	: 6144 KB
+physical id	: 0
+siblings	: 2
+core id		: 0
+cpu cores	: 2
+apicid		: 0
+initial apicid	: 0
+fpu		: yes
+fpu_exception	: yes
+cpuid level	: 13
+wp		: yes
+flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm ida dts tpr_shadow vnmi flexpriority
+bogomips	: 5586.29
+clflush size	: 64
+cache_alignment	: 64
+address sizes	: 36 bits physical, 48 bits virtual
+power management:
+
+processor	: 1
+vendor_id	: GenuineIntel
+cpu family	: 6
+model		: 23
+model name	: Intel(R) Core(TM)2 Duo CPU     T9600  @ 2.80GHz
+stepping	: 10
+microcode	: 0xa0b
+cpu MHz		: 800.000
+cache size	: 6144 KB
+physical id	: 0
+siblings	: 2
+core id		: 1
+cpu cores	: 2
+apicid		: 1
+initial apicid	: 1
+fpu		: yes
+fpu_exception	: yes
+cpuid level	: 13
+wp		: yes
+flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts nopl aperfmperf pni dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm sse4_1 xsave lahf_lm ida dts tpr_shadow vnmi flexpriority
+bogomips	: 5586.29
+clflush size	: 64
+cache_alignment	: 64
+address sizes	: 36 bits physical, 48 bits virtual
+power management:
+