* qsort replace: envlist_sort()
 * qsort replace: label_sort()
 * qsort replace: elem_list_sort()
 * qsort replace: maildir_sort_flags()
 * qsort replace: imap_sort_email_uid()
 * qsort replace: crypt_compare_*_qsort()
 * qsort replace: pgp_compare_*_qsort()
 * qsort replace: ARRAY_SORT and sort_t
 * qsort replace: pass sort_reverse setting into browser_sort_*() functions
 * qsort replace: remove SortAlias global
 * qsort replace: remove SbSortReverse global
 * fix spurious crypto sorting
 * tag more sort functions so that they're listed on the sort api page
 * use mutt_numeric_cmp for comparing numbers
 * handle 'sort_reverse' in browser_compare()
 * pass sort function and flags to browser_compare()