build: Use unpackdir from build.lua for dictionaries

Otherwise they would always be unpacked into the build subdirectory.

Author: benzea

build.lua

@@ -87,7 +87,7 @@ unpack = function (names)
   end
 
   -- Really, a weblate .dict plugin would make more sense than this
-  errorlevel = run('.', './generate-dictionaries.py')
+  errorlevel = run('.', './generate-dictionaries.py "' .. unpackdir .. '"')
   if errorlevel ~=0 then
     print("Failed to generate dictonaries from translation sources")
   end

generate-dictionaries.py

@@ -1,5 +1,6 @@
 #!/usr/bin/env python3
 
+import sys
 import latexmap
 import glob
 import os
@@ -34,7 +35,7 @@ def unicode_to_latex(string):
     return string
 
 
-dest_dir = 'build/unpacked'
+dest_dir = sys.argv[1]
 dicts = {}
 
 for infile in glob.glob('dict/*.ini'):