Remove connect:close header workaround

[joern]

jQuery contains a workaround for a bug in pre 1.5 Firefox that can be safely removed (anything older then FF 1.5 isn't supported anyway).

The relevant lines:

// Make sure the browser sends the right content length
if ( xml.overrideMimeType )
	xml.setRequestHeader("Connection", "close");

Link to some resources about the issue: The root cause of the hack (Dan just touched on it):

https://bugzilla.mozilla.org/show_bug.cgi?id=246651

Message reporting that the above bug was fixed in the 11 Sep 2004 build :

http://forums.mozillazine.org/viewtopic.php?p=788974

Two bugs from prototype (the second is marked duplicate):

http://dev.rubyonrails.org/ticket/5606 http://dev.rubyonrails.org/ticket/5809

Resulting from a recent discussion: http://groups.google.com/group/jquery-en/browse_thread/thread/8ff37a5c8660f4ec

[joern]

Fixed in [1733].

[ah520]

企业电子商务指南 数字寿州寿县门户 金信输送设备 输送机金信 工业流水线自动化流水线电动车流水线 金信输送线输送流水线] 拓野流水线 中国流水线行业网 拓野生产线 金信装配线、装配流水线] 输送设备、输送机 金信生产线生产流水线] 雅龙流水线 雅龙生产线 金信流水线 自动化装配线输送线流水线生产线 增盛流水线 和凯通电动门道闸岗亭 雅龙装配线装配流水线 台州水泵网 装配线装配流水线流水线配件 生产线组装流水线自动化流水线 输送线输送流水线皮带输送线 板链线流水线设备皮带流水线 流水线工业流水线自动化流水线 流水线装配线装配流水线涂装流水线 组装流水线自动化流水线电动车流水线 装配流水线生产流水线电子产品流水线板链线 涂装流水线包装流水线装配线 流水线设备工业流水线皮带流水线 http://www.zjlsx.com.cn/输送线生产线输送流水线 生产流水线 流水线 生产线 输送设备 生产流水线 输送机 输送线 装配线装配流水线