Buildsystem: Overhaul of the CMake buildsystem:

- utilize CMake for completely generating revision.h (kills off genrev and revision.h targets):
  - pull and set correct revision-ID/hash from Mercurial (hg) when using regular repository sourcetree
  - pull and set correct revision-ID/hash from archived releases (when pulled from googlecode)
  - set and use _BUILD_DIRECTIVE definition (earlier part of revision.h) as compiletime definition
- delete genrev and related buildsystems
  (now deprecated)
- Move some files around to adhere to buildsystem structure
Thanks to Shauren for figuring out the definition-behaviour for MSVC while he was in the shower

--HG--
branch : trunk
rename : cmake_uninstall.cmake.in => cmake/platform/unix/cmake_uninstall.in.cmake

cmake/compiler/gcc/settings.cmake

@@ -1,3 +1,11 @@
+# build in Release-mode by default if not explicitly set
+if( NOT CMAKE_BUILD_TYPE )
+  set(CMAKE_BUILD_TYPE "Release")
+endif()
+
+# Set build-directive (used in core to tell which buildtype we used)
+add_definitions(-D_BUILD_DIRECTIVE=${CMAKE_BUILD_TYPE})
+
 add_definitions(-fno-delete-null-pointer-checks)
 
 if( USE_SFMT)
@@ -6,18 +14,18 @@ if( USE_SFMT)
     add_definitions(-msse2 -mfpmath=sse)
   endif()
   add_definitions(-DHAVE_SSE2 -D__SSE2__)
-  message(STATUS "- GCC: SFMT enabled, SSE2 flags forced")
+  message(STATUS "GCC: SFMT enabled, SSE2 flags forced")
 endif()
 
 if( WITH_WARNINGS )
   add_definitions(-Wall -Wfatal-errors -Wextra)
-  message(STATUS "- GCC: All warnings enabled")
+  message(STATUS "GCC: All warnings enabled")
 else()
   add_definitions(--no-warnings)
-  message(STATUS "- GCC: All warnings disabled")
+  message(STATUS "GCC: All warnings disabled")
 endif()
 
 if( WITH_COREDEBUG )
   add_definitions(-ggdb3)
-  message(STATUS "- GCC: Debug-flags set (-ggdb3)")
+  message(STATUS "GCC: Debug-flags set (-ggdb3)")
 endif()