Merge branch 'es/chainlint-ncores-fix' into maint-2.45

The chainlint script (invoked during "make test") did nothing when it failed to detect the number of available CPUs. It now falls back to 1 CPU to avoid the problem. * es/chainlint-ncores-fix: chainlint.pl: latch CPU count directly reported by /proc/cpuinfo chainlint.pl: fix incorrect CPU count on Linux SPARC chainlint.pl: make CPU count computation more robust