Sync with 2.18.1

* maint-2.18:
  Git 2.18.1
  Git 2.17.2
  fsck: detect submodule paths starting with dash
  fsck: detect submodule urls starting with dash
  Git 2.16.5
  Git 2.15.3
  Git 2.14.5
  submodule-config: ban submodule paths that start with a dash
  submodule-config: ban submodule urls that start with dash
  submodule--helper: use "--" to signal end of clone options

diff --cc builtin/submodule--helper.c
Simple merge

diff --cc fsck.c
index a0cee0b,51f61ff..0f56977
--- 1/fsck.c
--- 2/fsck.c
+++ b/fsck.c
@@@ -64,9 -61,11 +64,11 @@@ static struct oidset gitmodules_done = 
        FUNC(ZERO_PADDED_DATE, ERROR) \
        FUNC(GITMODULES_MISSING, ERROR) \
        FUNC(GITMODULES_BLOB, ERROR) \
 -      FUNC(GITMODULES_PARSE, ERROR) \
 +      FUNC(GITMODULES_LARGE, ERROR) \
        FUNC(GITMODULES_NAME, ERROR) \
        FUNC(GITMODULES_SYMLINK, ERROR) \
+       FUNC(GITMODULES_URL, ERROR) \
+       FUNC(GITMODULES_PATH, ERROR) \
        /* warnings */ \
        FUNC(BAD_FILEMODE, WARN) \
        FUNC(EMPTY_NAME, WARN) \

diff --cc submodule-config.c
Simple merge