[lazarus] Updates

[Mattias Gaertner]

Hi folks,

Some updates for compiler options:
 - linker options fixed and multiple linker options
 - added Show Hints for unused project units
     You can now use the program file like Delphi to
     compile all units and there will be no stupid
     hint message, that a unit is not used in the main
     program.
 - added error count
 - The Test button was renamed to 'Show Options' and
   will now show the options passed to the compiler.
 - Include Assertion Code option added
 - 'use Compiler Config file' option fixed.


Mattias