Fix error: variable length array of non-POD element type 'vector<Gdk::Point>' raised on OSX 10.9
Fix warnings: in-class initializer for static data member of type 'const float' is a GNU extension
Fix more warnings: in-class initializer for static data member of type 'const float' is a GNU extension
Fix warnings: private field not used and unused parameter
Fix more warnings: private field not used and unused parameter
Disable verbose terminate function in OSX. Since 10.9 __gnu_cxx is a unknown namespace
Fix more warnings issued by Clang compiler
Silent remaining warnings triggered by Clang compiler for synfig-core
Fix warning: 'synfigapp::Action::Group::set_param' hides overloaded virtual functions
Fix wrong header guard macro
Fix warning: logical not is only applied to the left hand side of this comparison
Fix warning unused variable
Fix warning: comparison of integers of different signs: 'int' and 'const size_type'
Fix warnings of unused variables
Fix improper use of class token
Fix warning: Function ... hides overloaded virtual functions
Fix warning: Function ... hides overloaded virtual functions
Fix unused variables or parameters
Fix wrong use of == instead of = on non conditional stament
Fix previous commit