libzim reader code no longer prints to stdout

This is a quick fix to zimcheck's output being polluted by libzim's
own unsolicited messages.

Writer code keeps printing to stdout but it's less of a concern

Author: veloman-yunkan

src/search.cpp

@@ -307,7 +307,7 @@ Xapian::Enquire& Search::getEnquire() const
 
     auto query = mp_internalDb->parseQuery(m_query);
     if (mp_internalDb->m_verbose) {
-        std::cout << "Parsed query '" << m_query.m_query << "' to " << query.get_description() << std::endl;
+        std::cerr << "Parsed query '" << m_query.m_query << "' to " << query.get_description() << std::endl;
     }
     enquire->set_query(query);
 

src/suggestion.cpp

@@ -262,7 +262,7 @@ Xapian::Enquire& SuggestionSearch::getEnquire() const
     const auto unaccentedQuery = removeAccents(m_query);
     auto query = mp_internalDb->parseQuery(unaccentedQuery);
     if (mp_internalDb->m_verbose) {
-        std::cout << "Parsed query '" << unaccentedQuery << "' to " << query.get_description() << std::endl;
+        std::cerr << "Parsed query '" << unaccentedQuery << "' to " << query.get_description() << std::endl;
     }
     enquire->set_query(query);
 

src/tools.cpp

@@ -360,7 +360,7 @@ Xapian::Stem zim::getXapianStemmer(const std::string& iso639LangCode)
     try {
       stemmer = Xapian::Stem(twoLetterLangCode);
     } catch (...) {
-      std::cout << "No stemming for language '" << twoLetterLangCode << "'" << std::endl;
+      std::cerr << "No stemming for language '" << twoLetterLangCode << "'" << std::endl;
     }
   }
   return stemmer;

src/xapian/htmlparse.cc

@@ -212,7 +212,7 @@ zim::HtmlParser::parse_html(const string &body)
 		if (enc == string::npos || enc == decl.size()) break;
 
 		if (decl[enc] != '=') break;
-		
+
 		enc = decl.find_first_not_of(" \t\r\n", enc + 1);
 		if (enc == string::npos || enc == decl.size()) break;
 
@@ -355,12 +355,12 @@ zim::HtmlParser::parse_html(const string &body)
 		    }
 		}
 #if 0
-		cout << "<" << tag;
+		cerr << "<" << tag;
 		map<string, string>::const_iterator x;
 		for (x = parameters.begin(); x != parameters.end(); x++) {
-		    cout << " " << x->first << "=\"" << x->second << "\"";
+		    cerr << " " << x->first << "=\"" << x->second << "\"";
 		}
-		cout << ">\n";
+		cerr << ">\n";
 #endif
 		opening_tag(tag);
 		parameters.clear();