bisect: slightly improve the help message

bisect: remove stale test function

bisect: use array.array rather than lists for ancestor lists This nearly doubles performance and cuts memory usage in half on large bisections.

bisect: switch individual ancestor lists from dict to list This saves quite a lot of memory and increases performance

bisect: turn ancestors into an array This makes things faster and eliminates the separate stop hash

bisect: greatly simplify the ancestor accumulating loop

bisect: switch to rev-based calculation - use revlog.parentrevs in search loops - calculate stop directly in O(N) without reachable - move badrev check into candidates

bisect: fix up node vs rev naming

bisect: clarify some bisection code - rename __ancestors... to candidates - remove head parameter (it's always badrev) - eliminate comprehensions to shrink parents - num_ancestors -> n_child name fix - clarify node selection

bisect: inline num_children function

bisect: remove usage of sets

bisect: remove stop argument to ancestors function

bisect: use bail_if_changed - switch to using existing bail_if_changed code - only abort when we're about to do an update

cmdutil: make bail_if_changed bail on uncommitted merge

bisect: remove versionstr

bisect: simplify lookup - use repo.lookup directly - move merge check to check_clean

bisect: remove redundant clean checks

bisect: fold in two trivial functions

bisect: remove two unused functions

update test-merge-types

ui: allow default when prompting

merge: add flag merging intelligence - properly handle all 27 combinations of flags - prompt on conflicts

util: remove set_exec and set_link methods

patch: use util.set_flags

convert/svn: use util.set_flags

merge: use util.set_flags

wwrite: simplify with util.set_flags - always attempt to delete the file (gets rid of read-only message) - always write as a normal file - use set_flags to convert to link or set exec

util: add new set_flags method This is more efficient than calling set_link and set_exec