Fixes missing images in web-big-page (issue 4922046)

[PhilEHolmes]

Reviewers: Graham Percival,

Message:
Patch fixes the missing images in web-big-page.html.  Please review.

Description:
This patch works by adding an extra part (web/) to the path to the css
link and the example images links, and then using postprocess_html.py to
get rid of this for the split files.  postprocess_html.py already makes
this sort of change for a number of other aspects of split files.  I
have tested it on my local system and shown it working.  Please note
that there is an additional file in this patch -
input/regression/musicxml/GNUmakefile - current master will not compile
docs on my system without this change - Reinhold has debug information
from me.

Please review this at http://codereview.appspot.com/4922046/

Affected files:
  M Documentation/lilypond-texi2html.init
  M Documentation/macros.itexi
  M input/regression/musicxml/GNUmakefile
  M python/auxiliar/postprocess_html.py


Index: Documentation/lilypond-texi2html.init
diff --git a/Documentation/lilypond-texi2html.init  
b/Documentation/lilypond-texi2html.init
index  
3585a9e8ede21472bd4c36d9ad08b2f6ad2105d6..621a17b775fcbaf21679b877a9653bfe7e4b93a8  
100644
--- a/Documentation/lilypond-texi2html.init
+++ b/Documentation/lilypond-texi2html.init
@@ -852,7 +852,7 @@ sub web_settings() {
   print STDERR "Processing web site:  
[$Texi2HTML::THISDOC{current_lang}]\n";
   $Texi2HTML::Config::BODYTEXT = "";
   @Texi2HTML::Config::CSS_REFS      = (
-      {FILENAME => "lilypond-website.css", TITLE => "Default style"}
+      {FILENAME => "web/lilypond-website.css", TITLE => "Default style"}
       );
   @Texi2HTML::Config::ALT_CSS_REFS      = (
       );
Index: Documentation/macros.itexi
diff --git a/Documentation/macros.itexi b/Documentation/macros.itexi
index  
6e567a56d555a52f71e94cfac997ba50c2dd07fb..31f5c59a8cf33af8a99169a58cb500937ce01cd9  
100644
--- a/Documentation/macros.itexi
+++ b/Documentation/macros.itexi
@@ -730,8 +730,8 @@ For LilyPond version @version{}
 @macro exampleImage{IMAGE-FILE}
 @html
 <div class="float-center">
-  <a class="clickable" href="ly-examples/\IMAGE-FILE\.png">
-    <img src="ly-examples/\IMAGE-FILE\-small.png" alt="\IMAGE-FILE\">
+  <a class="clickable" href="web/ly-examples/\IMAGE-FILE\.png">
+    <img src="web/ly-examples/\IMAGE-FILE\-small.png" alt="\IMAGE-FILE\">
   </a>
   <p style="text-align: center">
     (click to enlarge)
Index: input/regression/musicxml/GNUmakefile
diff --git a/input/regression/musicxml/GNUmakefile  
b/input/regression/musicxml/GNUmakefile
index  
101abd10c444149e7f05891ec006d54f459be951..c84c053f5a3b6a5918ed6789271e4adcd05875b5  
100644
--- a/input/regression/musicxml/GNUmakefile
+++ b/input/regression/musicxml/GNUmakefile
@@ -16,7 +16,8 @@ include $(depth)/make/stepmake.make
 TITLE=Unofficial MusicXML test suite
 AUTHOR=Reinhold Kainhofer
 TEST_SUITE_VERSION=0.1
-LILYPOND_BOOK_FLAGS += --load-custom-package=book-musicxml-testsuite.py
+# Commented out by PH
+# LILYPOND_BOOK_FLAGS += --load-custom-package=book-musicxml-testsuite.py
 # This breaks since *.tex and *.texi still contains ac/lily-xxxxxx  
references!
 #LILYPOND_BOOK_FLAGS += --use-source-file-names

Index: python/auxiliar/postprocess_html.py
diff --git a/python/auxiliar/postprocess_html.py  
b/python/auxiliar/postprocess_html.py
index  
de3848537cb2f466fd8816414bc6519147c30ea9..f92ee3d60e4d0aa95114e7963e8949a34791da50  
100644
--- a/python/auxiliar/postprocess_html.py
+++ b/python/auxiliar/postprocess_html.py
@@ -105,6 +105,8 @@ def source_links_replace (m, source_val):
 split_docs_re = re.compile('(Documentation/out-www/(automated-engraving| 
essay|notation|changes|extending|music-glossary|usage|web|learning|snippets| 
contributor))/')
 lily_snippets_re = re.compile ('(href|src)="([0-9a-f]{2}/lily-.*?)"')
 pictures_re = re.compile ('src="(pictures/.*?)"')
+webcss_re = re.compile ('href="web/lilypond-website')
+lyexamples_re = re.compile ('src="web/(ly-examples/.*?)"')

 docindex_link_re = re.compile (r'href="index.html"')
 manuals_page_link_re = re.compile  
(r'href="((?:\.\./)+)Documentation/web/manuals')
@@ -117,6 +119,8 @@ def hack_urls (s, prefix, target,  
is_development_branch):
     if split_docs_re.match (prefix):
         s = lily_snippets_re.sub ('\\1="../\\2"', s)
         s = pictures_re.sub ('src="../\\1"', s)
+        s = webcss_re.sub ('href="lilypond-website', s)
+        s = lyexamples_re.sub ('src="\\1"', s)

     # we also need to replace in the lsr, which is already processed above!
     if 'input/' in prefix or 'Documentation/topdocs' in prefix or \