Tags: RcppCore/RcppParallel

RcppParallel 6.2.0

use resolved cmake path when checking cmake version

cmake is not necessarily on the PATH (e.g. on CRAN's macOS builders,
where only /Applications/CMake.app/Contents/bin/cmake is available),
so the version check must use the path resolved by configure.

Also remove the vestigial CXX prefix / flags detection block; its
consumers in src/Makevars.in were removed with the switch to the
cmake-driven oneTBB build (fd8f510), and it probed R CMD config
variables that are defunct in R (>= 4.6.0).

Increment version number to 6.1.0

note expected revdep failures from tbb abi change in cran-comments