editors/textadept: belatedly update the port to version 11.4
- Lexilla was split from main Scintilla distribution into its own
- Rather than removing -rdynamic and the linker script, append two symbols originating from our /lib/crt*.o that must stay global
- Remove no longer useful hack for glib 2.68.3, shorten the COMMENT
- Strip the binaries upon installation (subject to -DWITH_DEBUG)
Reported by: portscout (for a while)