fixed StringInputStream - in other case gatted string offset cast occured error2exception
PrimitiveHttpUrl importValue fix fo strings
Mail: headers support added
extends interface HttpClient

Conflicts:
	main/Net/Http/HttpClient.class.php
fix PrimitiveTimestampTZTest after update of Russians timezones in oct 2014
changed in test adapter from deprecated MySQL to MySQLim
MyImprovedDialect quote binary fix
added test InnerTransactionDBTest::testSavepoint
fix MySQLim::isConnected, added default database engine setup to MySQLim
fix AutoloaderClassPathCacheTest - removed string define(DEBUG, true)
Merge pull request #221 from AlexeyDsov/someFixes2014oct

different small fixes