[clang-warning-fix][incrementing-bool]

Fix for following OSX 10.9 clang warning:
oce/src/BRepAlgo/BRepAlgo_Tool.cxx:84:9: warning: incrementing expression of type bool is deprecated [-Wdeprecated]
          NbSub++;
          ~~~~~^
1 warning generated.
[clang-warning-fix][unsequenced]

Fix for following OSX 10.9 clang warning fix:

/Users/thomas/Devel/oce/src/StdSelect/StdSelect_ViewerSelector3d.cxx:770:38: warning: unsequenced modification and access to 'II' [-Wunsequenced]
              gp_Pnt (C->GetPoint3d (++II).XYZ()),
                                     ^
/Users/thomas/Devel/oce/src/StdSelect/StdSelect_ViewerSelector3d.cxx:837:34: warning: unsequenced modification and access to 'II' [-Wunsequenced]
          gp_Pnt (C->GetPoint3d (++II).XYZ()),
                                 ^
2 warnings generated.
[clang-warning-fix][deprecated-writable-strings]

Fix for following OSX 10.9 clang warning fix:
oce/src/OpenGl/OpenGl_Display.cxx:38:36: warning: conversion from string literal to 'char *' is deprecated [-Wdeprecated-writable-strings]
    static char* TheDummyDisplay = "DISPLAY";
                                   ^
1 warning generated.
[clang-warning-fix][tautological-compare]

Fix following OSX 10.9 clang warning:
/Users/thomas/Devel/oce/src/Draw/Draw.cxx:410:35: warning: comparison of constant 4294967294 with expression of type 'Standard_Boolean' (aka 'bool') is always true [-Wtautological-constant-out-of-range-compare]
    } while (Draw_Interprete(cmd) != (unsigned int ) -2);
             ~~~~~~~~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~~~~~~
1 warning generated.
[clang-warning-fix][switch] Fix missing switch value

Fix for following OSX 10.9 clang warning:
oce/src/Aspect/Aspect_MarkerStyle.cxx:172:11: warning: enumeration value 'Aspect_TOM_BALL' not handled in switch [-Wswitch]
        switch ( MyMarkerType ) {
                 ^
1 warning generated.
Merge pull request #450 from tpaviot/review/clang-warning-fixes

Review/clang warning fixes