XL: Recognize compilers identified by __ibmxl__
IBM XL C/C++ for Linux versions 13.1.6 and above no longer define
__IBMC__
or __IBMCPP__
by default (see -qxlcompatmacros
).
Instead __ibmxl__
now identifies the compiler along with some
related new version macros.
Fixes: #17784 (closed)