Merge branch 'ep/shell-assign-and-export-vars' into maint

* ep/shell-assign-and-export-vars:
  scripts: more "export VAR=VALUE" fixes
  scripts: "export VAR=VALUE" construct is not portable

diff --cc git-remote-testgit.sh
index 1c006a0518e247d58759df98602f6dae3935caf6,cbf470f64f0b93c520ce55d1b93c866b669bfbaa..a9c75a2360fec7a9ce5f22877a471f70bc405ff1
--- 1/git-remote-testgit.sh
--- 2/git-remote-testgit.sh
+++ b/git-remote-testgit.sh
@@@ -13,10 -13,9 +13,11 @@@ refspec="${GIT_REMOTE_TESTGIT_REFSPEC-$
  
  test -z "$refspec" && prefix="refs"
  
- export GIT_DIR="$url/.git"
+ GIT_DIR="$url/.git"
+ export GIT_DIR
  
 +force=
 +
  mkdir -p "$dir"
  
  if test -z "$GIT_REMOTE_TESTGIT_NO_MARKS"

diff --cc git-stash.sh
Simple merge

diff --cc t/t5560-http-backend-noserver.sh
Simple merge