Visual D v0.3.40 beta 2

Changes from beta 1:

• cv2pdb: did not run on XP anymore due to bad OS version requirements
• custom file properties: edit, change selection and apply could change new selected file
• moved "Other Compiler" option from main project page to compiler page
• added additional options to the resource compiler tool
• added basic support to compile C/C++ files:
  • new tool "C/C++" that is also auto-detected for usual file extensions
  • common command line options can be specified on the compiler page of the project
  • special command line options can be added per file
  • $(CC) expands to the compiler executable of the current D compiler: dmc, cl, gcc or clang
  • if "Translate D options" is checked, dmd options for -g, -release, -O are translated to
    the respective C/C++ compiler option