* depcomp-work:
depcomp: remove 'icc' depmode, add 'tcc' one
news: update w.r.t. recent depcomp changes
tests: fix spurious failures with tcc
depcomp: improve comments about tcc support
depcomp: remove last relics of libtool 1.4 support
depcomp: remove an unused variable
depcomp: rewrite a sed invocation for less quoting
depcomp: whitespace fixes
depcomp: shell code style changes
depcomp: make some code more self-documenting
depcomp: less duplication between AIX and Tru64 modes
depcomp: avoid an extra fork when possible
depcomp: reduce code duplication
depcomp: don't rely on character ranges working as in C locale
depcomp: cosmetic fixlets to a comment
depcomp: safer quoting in variable expansion
depcomp: correctly propagate exit status in exit trap
depcomp: use "rmdir", not "rm -rf", to remove the empty lock directory
depcomp: remove useless quoting in variable definitions
depcomp: be more idiomatic in checking for zero exit statuses