Merge branch 'maint'

Merge branch 'maint'

* maint:
  depcomp: avoid potential interferences from the environment
  depcomp: improve comments about the 'gcc' depmode
  sync: update files from upstream with "make fetch"
  maintcheck: remove an obsolescent check
  tests: rename some tests to more expressive names, again
  tests: remove an obsolescent grepping check
  tests: merge two tests on automatic remake functionality
  tests: rename some test to more expressive names
  news: 'compile' supports libfoo.a naming when wrapping Microsoft tools
  tests: ensure generation of wrapper tests matching multiple conditions
  tests: simplify a loop in gen-testsuite-part
  compile: support libfoo.a naming when wrapping Microsoft tools
  NEWS: fix wording and grammaros, re-wrap text accordingly
  cosmetics: fix typo in 'lib/depcomp' comments

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>