Merge branch 'maint-1.5.4' into maint

* maint-1.5.4:
bisect: fix bad rev checking in "git bisect good"
revision.c: make --date-order overriddable
Fix section about backdating tags in the git-tag docs
Document option --only of git commit
Documentation/git-request-pull: Fixed a typo ("send" -> "end")

diff --cc Documentation/git-commit.txt
Simple merge

diff --cc Documentation/git-tag.txt
Simple merge

diff --cc builtin-commit.c
Simple merge

diff --cc git-bisect.sh
Simple merge

diff --cc revision.c
Simple merge

diff --cc t/t6030-bisect-porcelain.sh
Simple merge