add an updated Julia language spec

Should be submitted upstream once it's more complete

Author: jwahlstrand

examples/simple.jl

@@ -5,8 +5,7 @@ sv = GtkSourceView()
 win[] = sv
 
 buff = sv.buffer
-langman = GtkSourceLanguageManager()
-lang = GtkSourceWidget.language(langman,"julia")
+lang = GtkSourceWidget.language(GtkSourceWidget.sourceLanguageManager,"julia1_10")
 buff.text = open("simple.jl","r") do f
     read(f,String)
 end

src/GtkSourceWidget.jl

@@ -265,8 +265,9 @@ function __init__()
     gboxed_cache_init()
 
     global sourceLanguageManager = GtkSourceLanguageManager()
-    GtkSourceWidget.set_search_path(sourceLanguageManager,
-      Any[joinpath(GtkSourceView_jll.artifact_dir, "share", "gtksourceview-5", "language-specs"), C_NULL])
+    set_search_path(sourceLanguageManager,
+      Any[ joinpath(GtkSourceView_jll.artifact_dir, "share", "gtksourceview-5", "language-specs"), @__DIR__, C_NULL])
+    set_search_path(GtkSourceStyleSchemeManagerLeaf(), Any[ joinpath(GtkSourceView_jll.artifact_dir, "share", "gtksourceview-5", "styles"), C_NULL] )
 end
 
 end # module