make index single-column

doc/utils/sphinx-config/conf.py.in

@@ -342,6 +342,10 @@ latex_elements = {
 '''
 }
 
+# copy custom style file for tweaking index layout
+latex_additional_files = [
+    'idxlayout.sty',
+]
 # Grouping the document tree into LaTeX files. List of tuples
 # (source start file, target name, title,
 #  author, documentclass [howto, manual, or own class]).
@@ -362,13 +366,14 @@ latex_toplevel_sectioning = 'part'
 #latex_show_pagerefs = False
 
 # If true, show URL addresses after external links.
-#latex_show_urls = False
+latex_show_urls = 'no'
+# latex_show_urls = 'footnote'
 
 # Documents to append as an appendix to all manuals.
 #latex_appendices = []
 
 # If false, no module index is generated.
-#latex_domain_indices = True
+latex_domain_indices = False
 
 
 # -- Options for manual page output ---------------------------------------