FpDebug (pure): Added thread-safe loggingsystem with three log-levels. The log-levels dllInfo and dllError are used to show messages/errors in the ide.
The new log-system is used to show a message when there is no dSym-bundle with Dwarf-debug info or if the ide has not enough rights to debug applications. (OS/X)

git-svn-id: http://svn.freepascal.org/svn/lazarus/trunk@45382 4005530d-fff6-0310-9dd1-cebe43e6787f