Make it easy to run Safari in the debugger on Windows

 Make it easy to run Safari in the debugger on Windows

 WebKitSite:

         Update Windows debugging instructions

         Reviewed by Mark Rowe.

         * building/debug.html:

 WebKitTools:

         Make it easy to run Safari in the debugger on Windows

         I've added a new script, debug-safari, which launches Safari in the
         debugger. On OS X it just calls gdb-safari.

         Reviewed by Mark Rowe.

         * FindSafari/FindSafari.cpp:
         (_tmain): Added a /debugger flag, which in combination with
         /printSafariLauncher will print a script that launches Safari in the
         debugger.
         * Scripts/debug-safari: Added.
         * Scripts/run-safari: Changed to call runSafari().
         * Scripts/run-webkit-nightly.cmd: Prepends the launcher script with
         vsvars32.bat, which will let us find VS/VC++ Express, and passes the
         first argument along to FindSafari.
         * Scripts/webkitdirs.pm:
         (sub runSafari): Added.

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@27878 268f45cc-cd09-0410-ab3c-d52691b4dbfc