Merge branch 'ab/string-list-count-in-size-t'

Count string_list items in size_t, not "unsigned int".

* ab/string-list-count-in-size-t:
  string-list API: change "nr" and "alloc" to "size_t"
  gettext API users: don't explicitly cast ngettext()'s "n"

diff --cc builtin/index-pack.c
Simple merge

diff --cc builtin/receive-pack.c
Simple merge

diff --cc commit-graph.c
Simple merge

diff --cc merge-ort.c
Simple merge

diff --cc wt-status.c
Simple merge