Reviewed by Geoff.

        <rdar://problem/4930614>
        Safari complains about "Slow Script" if GMail is left open and machine is busy
        
        <rdar://problem/4649516>
        Turn off slow script dialog or crank up time that makes it come up
        
        <rdar://problem/4963589>
        Slow script warning is displayed after closing of PROMPT or PRINT dialog
        
        Re-do the way script timeouts are handled. No longer use a unix timer that sends signals. Instead, add a 
        tick count and increment it in loop bodies. If the tick count reaches a threshold, do a timeout check. If the total time executing
        is higher than the timeout value, (possibly) interrupt the script. The timeout checker also adjusts the threshold dynamically
        to prevent doing the timeout check too often.
         
        * JavaScriptCore.exp:
        Remove pause and resume calls.
        
        * JavaScriptCore.vcproj/JavaScriptCore/JavaScriptCore.vcproj:
        Add winmm.lib.

        * kjs/interpreter.cpp:
        (KJS::Interpreter::init):
        (KJS::Interpreter::~Interpreter):
        (KJS::Interpreter::startTimeoutCheck):
        (KJS::Interpreter::stopTimeoutCheck):
        (KJS::Interpreter::resetTimeoutCheck):
        (KJS::getCurrentTime):
        (KJS::Interpreter::checkTimeout):
        * kjs/interpreter.h:
        (KJS::Interpreter::timedOut):
        * kjs/nodes.cpp:
        (DoWhileNode::execute):
        (WhileNode::execute):
        (ForNode::execute):

WebCore:

        Reviewed by Geoff.

        No need to pause timeout checks anymore.
        
        * bindings/js/kjs_window.cpp:
        (KJS::WindowFunc::callAsFunction):



git-svn-id: http://svn.webkit.org/repository/webkit/trunk@19534 268f45cc-cd09-0410-ab3c-d52691b4dbfc