Update version up to 7.6.0

Author: inv

src/Standard/Standard_Version.hxx

@@ -42,7 +42,7 @@
 //! - "dev" for development version between releases
 //! - "beta..." or "rc..." for beta releases or release candidates
 //! - "project..." for version containing project-specific fixes
-#define OCC_VERSION_DEVELOPMENT   "dev"
+//#define OCC_VERSION_DEVELOPMENT   "dev"
 
 // Derived (manually): version as real and string (major.minor)
 #define OCC_VERSION               7.6