[xiphos-source] [crosswire/xiphos] 8c58e5: Remove all #if 0...#endif and some other dead code...

[Caleb Maclennan]

  Branch: refs/heads/master
  Home:   https://github.com/crosswire/xiphos
  Commit: 8c58e53f555799867a44bb0f2b15d99b9f1a6ff0
      https://github.com/crosswire/xiphos/commit/8c58e53f555799867a44bb0f2b15d99b9f1a6ff0
  Author: Caleb Maclennan <caleb at alerque.com>
  Date:   2020-04-15 (Wed, 15 Apr 2020)

  Changed paths:
    M src/editor/slib-editor.c
    M src/gtk/bibletext.c
    M src/gtk/commentary_dialog.c
    M src/gtk/dictlex.c
    M src/gtk/display_info.c
    M src/gtk/gbs.c
    M src/gtk/gbs_dialog.c
    M src/gtk/main_menu.c
    M src/gtk/main_window.c
    M src/gtk/mod_mgr.c
    M src/gtk/parallel_dialog.c
    M src/gtk/parallel_tab.c
    M src/gtk/search_dialog.c
    M src/gtk/sidebar.c
    M src/gtk/tabbed_browser.c
    M src/gtk/utilities.c
    M src/main/biblesync_glue.cc
    M src/main/display.cc
    M src/main/modulecache.cc
    M src/main/navbar.cc
    M src/main/parallel_view.cc
    M src/main/previewer.cc
    M src/main/sword.cc
    M src/main/sword_treekey.cc
    M src/main/tab_history.c
    M src/main/xml.c

  Log Message:
  -----------
  Remove all #if 0...#endif and some other dead code (#913)

This should be a complete no-op code wise. Nothing in this commit should
change the function of the program in any way. If `git bisect` or
similar ever traces a problem to this commit, then something is wrong
and I didn't match start/end markers properly.

This partially addresses issue #894, bullet point 1 & part of 2.