Co-authored-by: Bertrand Bellenot <bellenot@users.noreply.github.com>

Since glew.h is directly used/included in ROOT's public interfaces, the correct way will be to ship it as well with ROOT

[ROOT-10302] Move glew to ROOT builtins (part 2)

https://www.openssl.org/news/secadv/20200421.txt

One server is more stable than two servers.
Disable tests - they trigger linker errors.

Removing build recipe for zstd via ExternalProject_Add()

Adding optimization flags

Remove redundant include directory for ZSTD

[zstd1.40] Update version of ZSTD

New version ZSTD 1.4.0: https://github.com/facebook/zstd/releases/tag/v1.4.0
New features: enable tuning of frame parameters,load dictionaries and many more.

Release notes: https://github.com/lz4/lz4/releases/tag/v1.9.2

Only build in Debug mode when the debug runtime libraries are used. This fixes the following warning:
LINK : warning LNK4098: defaultlib 'MSVCRTD' conflicts with use of other libs; use /NODEFAULTLIB:library

It contains multiple performance improvements comparing to lz4 1.8.5.

Does not supported. Original warning is:

cl : Command line warning D9002: ignoring unknown option '-O3'
[C:\build\workspace\root-pullrequests-build\build\builtins\zlib\ZLIB.vcxproj]

16:56:55 /mnt/build/workspace/root-pullrequests-build/root/builtins/zlib/adler32_cf.c:396:7: warning: ‘ifunc’ resolver for ‘adler32’ should return ‘uLong (*)(uLong,  const Bytef *, uInt)’ {aka ‘long unsigned int (*)(long unsigned int,  const unsigned char *, unsigned int)’} [-Wattribute-alias]
16:56:55  void *resolve_adler32(void)
16:56:55        ^~~~~~~~~~~~~~~
16:56:55 /mnt/build/workspace/root-pullrequests-build/root/builtins/zlib/adler32_cf.c:424:15: note: resolver indirect function declared here
16:56:55  uLong ZEXPORT adler32(uLong adler, const Bytef *buf, uInt len)  __attribute__ ((ifunc ("resolve_adler32")));

Using various CRC32 calculation techniques and algorithms didn't allow
 to achieve required compression ratio(to be investigated after).

This reverts commit 83e5d9f45c76914118501652e0c53ff56793fefe.

ROOT has conflicting license with crc32-pclmul_asm.S

This reverts commit b9026f695e4aa44e17e8a7efc6d8becd9351846b.

It help to solve a problem of correct handling of zlib compilation on SL6

This reverts commit b2591cc07aad680b5235670931ba496e94208034.

This reverts commit a7d16eef0bb19b74326d4593a4f0900dd508150a.

This reverts commit 2efc577271c7c52a8f2f800207dfdc42003d64a6.

The implementation of target attribute is using the STT_GNU_IFUNC symbol type, disabling its usage in zlib for Mac

This reverts commit 2569539bfbb0d552532f0afb7c5618daec228041.

This reverts commit 360cf5f1f262df524f3636f6a953ae4ddec59f81.

It support now more compilation cases (x86_64[SIMD/nonSIMD], Aarch64[Neon/CRC32], Windows)

This reverts commit 81f13d55f564f8a25e5d01ca04527af96c97f270.

It fix issues with Windows compilation

This reverts commit 9db55fc27131048d1e7aba9ac4fb0f1bd878d1c7.

This reverts commit ea5fea2ff4f68186e13c64f08ddd2d79aaeb30a4.

This reverts commit fb91bf9d99d04881a216cc1f2ed8542fd70b6a4a.

This reverts commit 82e12164ebccd86e2efb114e5728fe14996f6c15.