Artifact lookup: fix missing aasimar, add prices and special details.

The encyclopedia's add_arti_info() built its "Damage bonus vs:" and
"warns vs" lists from two duplicated hardcoded MH-flag chains that
both omitted MH_AASIMAR (Angelslayer silently displayed only "angels")
and would silently drop any future dwarf/gnome/hobbit/centaur/
illithid/tortle/gnoll-hating artifact. Beyond the fix, the lookup now
reports several artifact attributes it previously ignored:

* src/pager.c:
  - Replace both MH if-chains with one shared mh_names[] table and
    add_mhflag_names() helper covering every MH_ race flag; legacy
    display order is preserved so existing renders are unchanged
    except Angelslayer, which now shows "angels, aasimar" in both
    lines.
  - "Base price: N zm." after the material line, computed like
    arti_cost(): explicit artilist cost or 100x the base item's cost.
  - The "warns vs" entry now names the warning glow, e.g. "warns vs
    orcs, spiders (glows bright blue)", from the artifact's acolor
    via clr2colorname(); only for SPFX_WARN|SPFX_DFLAGH artifacts,
    matching has_glow_warning().
  - "May blast you when touched (wrong alignment, role, or race)."
    after the Restrictions line, mirroring the touch_artifact() hero
    predicate: SPFX_RESTR with a real alignment, or SPFX_INTEL with
    an associated role/race.
  - New "Other properties:" section: a data-driven arti_specials[]
    table of ~120 one-line notes for 44 artifacts whose behaviors are
    hardcoded in the game logic rather than artilist data (Magicbane
    riders, instakill chances, stat maxima, Mjollnir throw-return,
    Wand of Orcus self-curse and regen block, Hand of Vecna, and so
    on), each verified against the implementing code. Artifacts with
    no entries print no section.
  - All descriptor lines (Base item, Material, Alignment, Special
    attack, While wielded/worn, While carried, When invoked, etc.)
    now consistently end with a period.

Author: k21971

doc/evilhack-changelog.md

@@ -5557,4 +5557,5 @@ The following changes to date are:
 - Fix: pets avoided passive attackers they were protected against
 - Monster lookup now reports many more species attributes
 - Object lookup now reports rarity, materials, and more
+- Artifact lookup: fix missing aasimar, add prices and special details