RFR 8151939: VM_Version_init() print buffer is too small

[Coleen Phillimore]

Summary: Increase buffer size, use logging to print out version and os 
information

This replaces several -XX:+PrintMiscellaneous -XX:+Verbose to -Xlog:os 
or -Xlog:os+cpu.  Most use info level logging because it's only printed 
once at the beginning, except where printing is in the signal handler, 
which uses debug level.  Also, errors in setup use info level (not 
warning) since they never printed the warnings before without 
PrintMiscellaneous and Verbose.

busaa027% java -Xlog:os -version
[0.008s][info][os] SafePoint Polling address: 0x00007fde1d37f000
[0.008s][info][os] Memory Serialize Page address: 0x00007fde1d37d000
[0.009s][info][os] HotSpot is running with glibc 2.12, NPTL 2.12
java version "9-internal"
Java(TM) SE Runtime Environment (fastdebug build 
9-internal+0-2016-04-05-170806.cphillim.jdk9.vm-version)
Java HotSpot(TM) 64-Bit Server VM (fastdebug build 
9-internal+0-2016-04-05-170806.cphillim.jdk9.vm-version-coleen, mixed mode)

busaa027% java -Xlog:os,os+cpu -version
[0.008s][info][os] SafePoint Polling address: 0x00007f49c021f000
[0.008s][info][os] Memory Serialize Page address: 0x00007f49c021d000
[0.009s][info][os] HotSpot is running with glibc 2.12, NPTL 2.12
[0.011s][info][os,cpu] Logical CPUs per core: 2
[0.011s][info][os,cpu] L1 data cache line size: 64
[0.011s][info][os,cpu] UseSSE=4  UseAVX=2  UseAES=1 
MaxVectorSize=64Allocation prefetching: PREFETCHNTA at distance 192, 4 
lines of 64 bytes
[0.011s][info][os,cpu] PrefetchCopyIntervalInBytes 576
[0.011s][info][os,cpu] PrefetchScanIntervalInBytes 576
[0.011s][info][os,cpu] PrefetchFieldsAhead 1
[0.011s][info][os,cpu] ContendedPaddingWidth 128
[0.011s][info][os,cpu] CPU:total 72 (18 cores per cpu, 2 threads per 
core) family 6 model 63 stepping 2, cmov, cx8, fxsr, mmx, sse, sse2, 
sse3, ssse3, sse4.1, sse4.2, popcnt, avx, avx2, aes, clmul, erms, lzcnt, 
ht, tsc, tscinvbit, bmi1, bmi2
[0.011s][info][os,cpu] CPU Model and flags from /proc/cpuinfo:
[0.011s][info][os,cpu] model name    : Intel(R) Xeon(R) CPU E5-2699 v3 @ 
2.30GHz
[0.011s][info][os,cpu] 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 pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs 
bts rep_good nopl xtopology nonstop_tsc aperfmperf eagerfpu pni 
pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 fma cx16 xtpr pdcm 
pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave 
avx f16c rdrand lahf_lm abm ida arat epb xsaveopt pln pts dtherm 
tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 avx2 smep 
bmi2 erms invpcid
java version "9-internal"
Java(TM) SE Runtime Environment (fastdebug build 
9-internal+0-2016-04-05-170806.cphillim.jdk9.vm-version)
Java HotSpot(TM) 64-Bit Server VM (fastdebug build 
9-internal+0-2016-04-05-170806.cphillim.jdk9.vm-version-coleen, mixed mode)

open webrev at http://cr.openjdk.java.net/~coleenp/8151939.01/webrev
bug link https://bugs.openjdk.java.net/browse/JDK-8151939

Tested in rbt and jprt.

Thanks,
Coleen