[gentle] Profiling 1.2.9

[Adam B. <ag...@gm...>]

Profiling an application that uses Gentle 1.2.9, I discovered alot of time
was spent in CacheManager.ClearQueryResultsByType().  The indexOf on line
279 is the main culprit and changing that line to:
 if (entry.Key.Length >= match.Length && entry.Key.Substring(0,
match.Length).Equals(match))

from
 if (entry.Key.IndexOf(match) != -1)
cuts the time in about half

Adam