Merge branch 'maint'

* maint:
  configure: move a misplaced "section" comment
  configure: clump check for ${var%...} and ${var#...} expansion together
  cosmetics: improve wording of a couple of configure messages
  configure: the testsuite shell must support 'test -e' and 'test ! -e'
  tests: remove stale workarounds for Solaris /bin/sh

diff --cc configure.ac
Simple merge

diff --cc t/ax/test-init.sh
Simple merge