Improve performance for xml and html files

runtime/syntax/html.micro

@@ -1,7 +1,7 @@
 ## Here is a short improved example for HTML.
 ##
 syntax "html" "\.htm[l]?$"
-color identifier start="<" end=">"
+color identifier "<.*?>"
 color special "&[^;[[:space:]]]*;"
 color constant ""[^"]*"|qq\|.*\|"
 color statement "(alt|bgcolor|height|href|label|longdesc|name|onclick|onfocus|onload|onmouseover|size|span|src|style|target|type|value|width)="

runtime/syntax/xml.micro

@@ -1,8 +1,7 @@
 ## Here is an example for xml files.
 
 syntax "xml" "\.(xml|sgml?|rng|plist)$"
-color statement   "<[^> ]+"
-color statement   ">"
+color identifier "<.*?>"
 color comment start="<!DOCTYPE" end="[/]?>"
 color comment start="<!--" end="-->"
 color special    "&[^;]*;"