More 1.3.3 version updates and changes in src/*.fl.

There had been manual changes in fluid-generated files, so the .fl files
had to be adjusted and updated to fltk 1.3.3.

Note that fluid SHOULD generate 'const' data for embedded images, but
doesn't yet, so I had to re-edit src/Fl_File_Chooser.cxx to keep the
previous 'const' changes in this file.


git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10357 ea41ed52-d2ee-0310-a9c1-e6b18d33e121