* src/lisp.h (struct vectorlike_header): New field `nbytes',
adjust comment accordingly.
* src/alloc.c (enum mem_type): New type `MEM_TYPE_VECTOR_BLOCK'
to denote vector blocks. Adjust users (live_vector_p,
mark_maybe_pointer, valid_lisp_object_p) accordingly.
(COMMON_MULTIPLE): Move outside #if USE_LSB_TAG.
(VECTOR_BLOCK_SIZE, vroundup, VECTOR_BLOCK_BYTES),
(VBLOCK_BYTES_MIN, VBLOCK_BYTES_MAX, VECTOR_MAX_FREE_LIST_INDEX),
(VECTOR_FREE_LIST_FLAG, ADVANCE, VINDEX, SETUP_ON_FREE_LIST),
(VECTOR_SIZE, VECTOR_IN_BLOCK): New macros.
(roundup_size): New constant.
(struct vector_block): New data type.
(vector_blocks, vector_free_lists, zero_vector): New variables.
(all_vectors): Renamed to `large_vectors'.
(allocate_vector_from_block, init_vectors, allocate_vector_from_block)
(sweep_vectors): New functions.
(allocate_vectorlike): Return `zero_vector' as the only vector of
0 items. Allocate new vector from block if vector size is less than
or equal to VBLOCK_BYTES_MAX.
(Fgarbage_collect): Move all vector sweeping code to sweep_vectors.
(init_alloc_once): Add call to init_vectors.
* doc/lispref/internals.text (Garbage Collection): Document new
vector management code and vectorlike_header structure.
* doc/lispref/internals.texi (Building Emacs, Garbage Collection): Copyedits.
(Writing Emacs Primitives): Re-organize discussion of functions
with variable Lisp arguments are handled. Delete an obsolete
remark, previously tagged as FIXME.
* doc/lispref/os.texi (Idle Timers): Minor clarification.
(Idle Timers): Link to Time of Day for description of time list.
* doc/lispref/internals.texi: (Writing Emacs Primitives):
Update Fcoordinates_in_window_p and For example definitions.
Give examples of things with non-nil interactive args. Mention eval_sub.
Remove old info about strings and GCPRO. Mention cus-start.el.
(Buffer Internals, Window Internals, Process Internals):
Misc small updates and fixes for fields.
* admin/FOR-RELEASE: Related markup.
* doc/lispref/internals.texi: Change @appendix section commands to @section
(both forms are equivalent; just being consistent with the rest of lispref).
(Building Emacs): Say less about CANNOT_DUMP platforms.
Replace deleted eval-at-startup with custom-initialize-delay.
* etc/NEWS: Mention eval-at-startup.
