Log Message:
ibus: update to 1.5.28.

pkgsrc changes:
- explicitly use updated unicode-character-database 15.0.0 and
  unicode-emoji 15.0
- remove -ldl workaround since pull request has been applied in upstream
 https://github.com/ibus/ibus/pull/2442
- fix endianness check in configure
 https://github.com/ibus/ibus/pull/2477
- workaround X11 locale Compose directory problem (${PREFIX}/lib/X11/locale
  vs ${PREFIX}/share/X11/locale) on NetBSD native X11
 https://github.com/ibus/ibus/pull/2478

Upstream changes:
 https://github.com/ibus/ibus/releases/tag/1.5.28

1.5.28

  * Implement new process_key_event for ibus-x11 506ac99
  * Convert internal EN compose table to GResource 19ca106 ae69635 bf8848e
  * Enhance surrounding text 8d0abbc 781119b ddead51 2a235c8
  * Enhance CI 2719e93 2555fa9 a3a9bd3 f3a7772
  * Update ibusunicodegen.h with Unicode 15.0.0 8f00d67
  * Update simple.xml with xkeyboard-config 2.38-1 594ec48 3c51582
  * Fix SEGVs cd621f8 ecfae16
  * Release 1.5.28 bc065f8

Code Contributors:

  * tools: Check libdl for dlclose() properly in configure (Izumi Tsutsui)
    babad78
  * configure: Fix texts for surrounding text (Eberhard Beilharz) d190bc3
  * Add active-surrounding-text property to IBusEngine (Philippe Rouquier)
    bd24be4

Translation Contributors:

  * po: Update translation (Georgian) (Temuri Doghonadze) 382c034
  * po: Update translation (Spanish) (Emilio Herrera) 8abf3eb
  * po: Update translation (Turkish) (Oguz Ersen) f3a9983
  * po: Update translation (Russian) (Alexey Rubtsov) 4b0e4c5
  * po: Update translation (Korean) (simmon) 41e33c2
  * po: Update translation (French) (Julien Humbert) 2f897b5
  * po: Update translation (Italian) (Luis Pixeltux) f6eabce