Summary:
- Port fix https://aone.alibaba-inc.com/project/355606/issue/8443788 to dragonwell
- Switch implementation of java/net/Inet4AddressImpl.lookupAllHostAddr based on Linux glibc versions.

Test Plan: jdk/test/net/

Reviewers: 井桐

Reviewed By: 井桐

Differential Revision: https://aone.alibaba-inc.com/code/D849274

Reviewed-by: clanger, vtewari

Summary: Remove unused include sys/sysctl.h for linux
Reviewed-by: andrew, aph

Reviewed-by: dsamersoff, rriggs

8230856: Java_java_net_NetworkInterface_getByName0 on unix misses ReleaseStringUTFChars in early return
Reviewed-by: dfuchs, stuefe, vtewari

Reviewed-by: clanger, chegar
Contributed-by: joelpelaez@gmail.com

Reviewed-by: igerasim, mschoene, michaelm, rhalade

Reviewed-by: skoivu, chegar

Reviewed-by: clanger, chegar
Contributed-by: sshamaia@in.ibm.com

Reviewed-by: chegar, rriggs, igerasim, skoivu, rhalade

Summary: One off specific change for 8u141-b31
Reviewed-by: coffeys

Reviewed-by: michaelm, chegar, clanger, msheppar, vtewari

Reviewed-by: chegar, dsamersoff, msheppar, clanger

Reviewed-by: chegar, dsamersoff, msheppar, clanger

Reviewed-by: chegar, rriggs, rhalade, vtewari

Reviewed-by: chegar, rriggs, igerasim, skoivu, rhalade

Reviewed-by: chegar, rriggs, rhalade, vtewari

Reviewed-by: chegar, rriggs, igerasim, skoivu, rhalade

Reviewed-by: chegar, igerasim

Reviewed-by: chegar, rriggs, coffeys

Reviewed-by: chegar, rriggs, coffeys

Reviewed-by: coffeys, igerasim

Reviewed-by: chegar

Reviewed-by: michaelm, chegar, clanger, msheppar, vtewari

Reviewed-by: chegar, msheppar

Reviewed-by: chegar, robm

Reviewed-by: chegar

Reviewed-by: chegar

Reviewed-by: michaelm

Reviewed-by: michaelm

Reviewed-by: michaelm
Contributed-by: brian.toal@gmail.com

Reviewed-by: michaelm

Reviewed-by: michaelm

8046893: JNI exception pending in jdk/src/solaris/native/java/net: ExtendedOptionsImpl.c, PlainDatagramSocketImpl.c
Reviewed-by: alanb, chegar

Summary: added null check to JNI function calls returns in Inet6AddressImpl.c net_util_md.c
Reviewed-by: chegar, coffeys

Summary: ensure that file descriptor is properly closed if setsockopt fails.
Reviewed-by: rriggs

Reviewed-by: alanb, chegar, dsamersoff, msheppar

Summary: avoid passing a null ifname string to GetStringUTFChars native fn calls within a NetworkInterface method call flows
Reviewed-by: chegar, alanb

Summary: Using a function call directly "gai_strerror(gai_error)" instead of using the function pointer which was declared but not initialized.
Reviewed-by: chegar, coffeys, igerasim

Reviewed-by: alanb
Contributed-by: kirk.shoop@microsoft.com, v-valkop@microsoft.com