Preparing ORC 1.7.1/1.6.12 releases

[Dongjoon Hyun <do...@gmail.com>]

Hi, All.

I'm going to start to release 1.6.12 and 1.7.1 next week for the following
patches.

ORC-1039: Make FileDump.recoverFile handle side files only if they exist
(#949)
ORC-1036: Support dynamic download of the latest tzdata based on sha512.sum
file (#948)
ORC-1035: Fix the way to get the backupDataPath in recoverFile (#945)
ORC-1034: Fix the indexOf algorithm in `FileDump` (#943)
ORC-1030: Java Tools may have missed OrcFile.MAGIC during file recovery
(#941)
ORC-1029: ServiceLoader is not thread-safe, avoid concurrent calls (#940)
ORC-1024: [C++] Fix inconsistent bloom filter hashing for numeric values
(#937)
ORC-1011: Activate `java17` profile automatically (#920)
ORC-1010: Bump tzdata from tzdata-2020e-1.tar.xz to tzdata-2021b-1.tar.xz
(#918)
ORC-1009: [C++] Missing string include causes build failure with MSVC++
(#919)
ORC-1008: Fix overflow detection code for C++ int64_t / java long (#950)
ORC-1002: Add java17 profile for Java17 unit testing (#912)

Please let me know if you have more patches to bring in.

Thank you in advance.

Dongjoon.