Update GeanyLua for Scintilla 5

[eht16]

After geany/geany#2867 has been merged, the GeanyLua plugin needs to be updated to work with the new Scintilla version.

Currently, compilation fails as follow:

make: Entering directory '/home/enrico/projects/geany-plugins/geanylua'
Making all in docs
make[1]: Entering directory '/home/enrico/projects/geany-plugins/geanylua/docs'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/enrico/projects/geany-plugins/geanylua/docs'
Making all in examples
make[1]: Entering directory '/home/enrico/projects/geany-plugins/geanylua/examples'
Making all in dialogs
make[2]: Entering directory '/home/enrico/projects/geany-plugins/geanylua/examples/dialogs'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/enrico/projects/geany-plugins/geanylua/examples/dialogs'
Making all in edit
make[2]: Entering directory '/home/enrico/projects/geany-plugins/geanylua/examples/edit'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/enrico/projects/geany-plugins/geanylua/examples/edit'
Making all in info
make[2]: Entering directory '/home/enrico/projects/geany-plugins/geanylua/examples/info'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/enrico/projects/geany-plugins/geanylua/examples/info'
Making all in scripting
make[2]: Entering directory '/home/enrico/projects/geany-plugins/geanylua/examples/scripting'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/enrico/projects/geany-plugins/geanylua/examples/scripting'
Making all in work
make[2]: Entering directory '/home/enrico/projects/geany-plugins/geanylua/examples/work'
make[2]: Nothing to be done for 'all'.
make[2]: Leaving directory '/home/enrico/projects/geany-plugins/geanylua/examples/work'
make[2]: Entering directory '/home/enrico/projects/geany-plugins/geanylua/examples'
make[2]: Nothing to be done for 'all-am'.
make[2]: Leaving directory '/home/enrico/projects/geany-plugins/geanylua/examples'
make[1]: Leaving directory '/home/enrico/projects/geany-plugins/geanylua/examples'
make[1]: Entering directory '/home/enrico/projects/geany-plugins/geanylua'
  CC       libgeanylua_la-glspi_sci.lo
  CC       geanylua_la-geanylua.lo
In file included from glspi_sci.c:11:
glspi_sci.h:369:39: error: ‘SCI_GETTWOPHASEDRAW’ undeclared here (not in a function); did you mean ‘SCI_GETPHASESDRAW’?
  369 |         {"GETTWOPHASEDRAW", SLT_BOOL, SCI_GETTWOPHASEDRAW, SLT_VOID, SLT_VOID},
      |                                       ^~~~~~~~~~~~~~~~~~~
      |                                       SCI_GETPHASESDRAW
  CCLD     geanylua.la
glspi_sci.h:370:39: error: ‘SCI_SETTWOPHASEDRAW’ undeclared here (not in a function); did you mean ‘SCI_SETPHASESDRAW’?
  370 |         {"SETTWOPHASEDRAW", SLT_VOID, SCI_SETTWOPHASEDRAW, SLT_BOOL, SLT_VOID},
      |                                       ^~~~~~~~~~~~~~~~~~~
      |                                       SCI_SETPHASESDRAW
glspi_sci.h:711:32: error: ‘SCI_SETLEXER’ undeclared here (not in a function); did you mean ‘SCI_SETILEXER’?
  711 |         {"SETLEXER", SLT_VOID, SCI_SETLEXER, SLT_INT, SLT_VOID},
      |                                ^~~~~~~~~~~~
      |                                SCI_SETILEXER
glspi_sci.h:716:40: error: ‘SCI_SETLEXERLANGUAGE’ undeclared here (not in a function); did you mean ‘SCI_GETLEXERLANGUAGE’?
  716 |         {"SETLEXERLANGUAGE", SLT_VOID, SCI_SETLEXERLANGUAGE, SLT_VOID, SLT_STRING},
      |                                        ^~~~~~~~~~~~~~~~~~~~
      |                                        SCI_GETLEXERLANGUAGE
glspi_sci.h:717:40: error: ‘SCI_LOADLEXERLIBRARY’ undeclared here (not in a function)
  717 |         {"LOADLEXERLIBRARY", SLT_VOID, SCI_LOADLEXERLIBRARY, SLT_VOID, SLT_STRING},
      |                                        ^~~~~~~~~~~~~~~~~~~~
make[1]: *** [Makefile:862: libgeanylua_la-glspi_sci.lo] Error 1
make[1]: *** Waiting for unfinished jobs....
make[1]: Leaving directory '/home/enrico/projects/geany-plugins/geanylua'
make: *** [Makefile:916: all-recursive] Error 1
make: Leaving directory '/home/enrico/projects/geany-plugins/geanylua'
``

[elextr]

Not surprising really. Scintilla has jumped two major versions, so its API has changed (twice) incompatibly.

[Skif-off]

GeanyLua: Update glspi_sci.h will fix it.