Merge branch 'master' into next
* master:
bash: add support for 'git stash pop --index' option
Documentation: mention 'git stash pop --index' option explicitly
Simplify some 'fprintf(stderr); return -1;' by using 'return error()'
Simplify some instances of run_command() by using run_command_v_opt().
show-branch: don't use LASTARG_DEFAULT with OPTARG
send-email: use UTF-8 rather than utf-8 for consistency
git-send-email.perl: improve detection of MIME encoded-words
diff.c: plug a memory leak in an error path
fetch-pack: close output channel after sideband demultiplexer terminates
builtin-remote: Make "remote show" display all urls
symlinks.c: small style cleanup