[clang-warning-fix][deprecated-writable-strings]
[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.

heartvalve/oce,Tech-XCorp/oce,EvgeneOskin/oce,EvgeneOskin/oce,tpaviot/oce,Tridify/oce,BenoitPerrot/oce,Tridify/oce,Tech-XCorp/oce,finetjul/oce,Tridify/oce,BenoitPerrot/oce,heartvalve/oce,Tridify/oce,mathstuf/oce,Tech-XCorp/oce,tpaviot/oce,BenoitPerrot/oce,Tridify/oce,heartvalve/oce,mathstuf/oce,finetjul/oce,tpaviot/oce,finetjul/oce,EvgeneOskin/oce,tpaviot/oce,Tech-XCorp/oce,heartvalve/oce,EvgeneOskin/oce,finetjul/oce,mathstuf/oce,heartvalve/oce,BenoitPerrot/oce,mathstuf/oce,Tech-XCorp/oce,tpaviot/oce,BenoitPerrot/oce,mathstuf/oce,finetjul/oce,EvgeneOskin/oce