BUILD/CONFIG: Build with Intel Compiler

[tvegas1]

What

Build UCX with Intel ICC/ICX compilers.

Why ?

Basic Intel compiler support.

How ?

Relax needed options, for Intel compiler only.

Tested

Build tested only with configure-devel and configure-release.

icc -V
Intel(R) C Intel(R) 64 Compiler for applications running on Intel(R) 64, Version 17.0.4.196 Build 20170411
icx -V
Intel(R) C Compiler for applications running on Intel(R) 64, Version 2021.1 NextGen Beta Build 20200304

./autogen.sh; CXX=icpc CC=icc ./contrib/configure-devel
./autogen.sh; CXX=icpx CC=icx ./contrib/configure-devel