OcdFileImport: Reliably detect Registration black

Mapper is unable to detect Registration black in absence of spot
colors. This patch fixes the defect, loosens the name matching criterion
and aligns the matching criteria along the supported OCD format
versions.

Author: lpechacek

src/fileformats/ocd_file_import.cpp

@@ -503,12 +503,12 @@ void OcdFileImport::importColors(const OcdFile<Ocd::FormatV8>& file)
 		}
 		color->setKnockout(color_info.overprint != 0);		
 
-		if ((i == 0 && color->isBlack() && color->getName() == QLatin1String("Registration black"))
-		    || (!components.empty() && components.size() == num_separations
-		        && color_info.cmyk.cyan == 200
+		if ((color->isBlack() && color->getName().startsWith(QLatin1String("Registration black")))
+		    || (color_info.cmyk.cyan == 200
 		        && color_info.cmyk.magenta == 200
 		        && color_info.cmyk.yellow == 200
 		        && color_info.cmyk.black == 200
+		        && components.size() == num_separations
 		        && std::all_of(color_info.separations, color_info.separations + num_separations,
 		                       [](const auto& s) { return s == 200; }) ) )
 		{
@@ -710,12 +710,12 @@ void OcdFileImport::importColor(const QString& param_string)
 	if (!number_ok)
 		return;
 
-	if ((cmyk.isBlack() && name == QLatin1String("Registration black"))
-	    || (!components.empty() && components.size() == spot_colors.size()
-	        && qFuzzyCompare(cmyk.c, 1)
+	if ((cmyk.isBlack() && name.startsWith(QLatin1String("Registration black")))
+	    || (qFuzzyCompare(cmyk.c, 1)
 	        && qFuzzyCompare(cmyk.m, 1)
 	        && qFuzzyCompare(cmyk.y, 1)
 	        && qFuzzyCompare(cmyk.k, 1)
+	        && components.size() == spot_colors.size()
 	        && std::all_of(begin(components), end(components),
 	                       [](const auto& c) { return qFuzzyCompare(c.factor, 1); }) ) )
 	{

test/file_format_t.cpp

@@ -1412,11 +1412,6 @@ void FileFormatTest::colorTest()
 		// the target file format.
 		for (auto i = 0; i < original->getNumColorPrios(); ++i)
 		{
-			// >>>>>>>>> Temporary handling of OCD defects
-			if (*format_id == 'O' && i == 0 && original->getColorByPrio(0)->getName() != copy->getColorByPrio(0)->getName())
-				QEXPECT_FAIL("", "Registration black is not properly detected in absence of spot colors", Continue);
-			// <<<<<<<<< Temporary handling of OCD defects
-
 			// Gratiously handle missing v8 features (opacity, limited name
 			// length, CMYK color resolution).
 			auto* color_in_original = original->getColorByPrio(i);