Add tests for ucd::isspace.

Makefile.am

 UCD_VERSION=6.2.0
 UCD_ROOTDIR=data/ucd
 
+data/ucd/PropList.txt:
+	mkdir -pv data/ucd
+	wget -O $@ http://www.unicode.org/Public/${UCD_VERSION}/ucd/PropList.txt
+
 data/ucd/UnicodeData.txt:
 	mkdir -pv data/ucd
 	wget -O $@ http://www.unicode.org/Public/${UCD_VERSION}/ucd/UnicodeData.txt
 tests_printucddata_SOURCES = tests/printucddata.cpp
 tests_printucddata_LDADD   = src/libucd.la
 
-tests/unicode-data.expected: tools/printdata.py tools/ucd.py
+tests/unicode-data.expected: tools/printdata.py tools/ucd.py \
+	data/ucd/UnicodeData.txt \
+	data/ucd/PropList.txt
 	tools/printdata.py ${UCD_ROOTDIR} > $@
 
 tests/unicode-data.actual: tests/printucddata

tests/printucddata.cpp

 		ucd::codepoint_t upper = ucd::toupper(c);
 		ucd::codepoint_t lower = ucd::tolower(c);
 		ucd::codepoint_t title = ucd::totitle(c);
-		printf("%06X %s %06X %06X %06X\n", c, category, upper, lower, title);
+		const char *whitespace = ucd::isspace(c) ? "White_Space" : "";
+		printf("%06X %s %06X %06X %06X %s\n", c, category, upper, lower, title, whitespace);
 	}
 	return 0;
 }

tools/printdata.py

 for data in ucd.parse_ucd_data(ucd_rootdir, 'UnicodeData'):
 	for codepoint in data['CodePoint']:
 		unicode_chars[codepoint] = data
+		unicode_chars[codepoint]['Properties'] = []
+for data in ucd.parse_ucd_data(ucd_rootdir, 'PropList'):
+	if data['Property'] in ['White_Space']:
+		for codepoint in data['Range']:
+			unicode_chars[codepoint]['Properties'].append(data['Property'])
 
 null = ucd.CodePoint('0000')
 if __name__ == '__main__':
 			if title == null: title = codepoint
 			if upper == null: upper = codepoint
 			if lower == null: lower = codepoint
-			print '%s %s %s %s %s' % (codepoint, data['GeneralCategory'], upper, lower, title)
+			print '%s %s %s %s %s %s' % (codepoint, data['GeneralCategory'], upper, lower, title, ' '.join(data['Properties']))
 		except KeyError:
-			print '%s Cn %s %s %s' % (codepoint, codepoint, codepoint, codepoint)
+			print '%s Cn %s %s %s ' % (codepoint, codepoint, codepoint, codepoint)