Added dependencies of Fl_PostScript.o

git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10293 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Replaced Xutf8.H by Xutf8.h

git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10294 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Fixed typo ./FL/Fl_Plugin.H

git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@10295 ea41ed52-d2ee-0310-a9c1-e6b18d33e121