typos

Box/Main.cpp

Common/Context.cpp

Common/Context.h

Common/DefaultOptions.h

Common/GetOptions.cpp

Common/GetOptions.h

Common/Options.cpp

Common/Options.h

Fltk/Callbacks.cpp

Fltk/Main.cpp

Fltk/Makefile

Fltk/Message.cpp

Makefile

Motif/CbFile.cpp

Motif/CbOptions.cpp

Motif/Main.cpp

Motif/Makefile

Motif/Message.cpp

Parser/Gmsh.tab.cpp

Parser/Gmsh.y