#604 Dev-C++ 4.9.9.2 - Custom makefile gets reset.

[csantora]

A "custom makefile" is set in "Project Options". If
the program is closed, run, and the project is
reopened, then the "custom makefile" setting is not
properly restored.

Scenario:

• Create a project.
• In "Project Options", set "custom makefile" to some
  makefile.
• "Rebuild All" runs the custom makefile.

• Close Dev-C++

• Run Dev-C++

• "Reopen" the project.
• "Rebuild All" generates an Error popup that says
  "Make file not found".
• Go to "Project Options"->"Makefile". "Use custom
  makefile" is already checked and the filename is
  correct. Click OK without making any changes.
• "Rebuild All" autogenerates Makefile.win and uses
  that for compilation.
• Go to "Project Options"->"Makefile" again. This time
  "Use Custom Makefile" is no longer checked. Check it.
  Click OK.

• Now "Rebuild All" uses the custom makefile correctly.

• Instead of closing Dev-C++, just close the current
  project.

• "Reopen" the project.
• "Rebuild All" still uses the custom makefile.