[CMAKE][INCLUDE]
- In DPRINT1(), ASSERT(), etc. - print relative (to REACTOS_SOURCE_DIR) 
paths to reduce debug log spam.
- Unify GCC and MSVC versions of _WARN() macro.


git-svn-id: svn://svn.reactos.org/reactos/trunk@61265 97493ccd-5924-5043-b1f5-66cb403b36ce
[CMAKE]
Use -ffat-lto-objects option for LTCG builds. GCC 4.9 now defaults 
to slim LTO, which (owing to linker bug #13557) fails with undefined 
reference errors.
[LWIP]
Compile with -fno-builtin-malloc -fno-builtin-free. GCC bug #56578.


git-svn-id: svn://svn.reactos.org/reactos/trunk@61266 97493ccd-5924-5043-b1f5-66cb403b36ce