Buildsytem/All: Clean up main CMakeLists.txt a tad bit

- Move genrevision subproject into own folder to avoid clutter (less junk)
- Make options a bit more understandable (for CMake GUI)
- Arrange CMakeLists.txt actions into subsections so it's easier to understand

--HG--
branch : trunk

src/genrevision/CMakeLists.txt

@@ -0,0 +1,33 @@
+# Copyright (C) 2008-2010 Trinity <http://www.trinitycore.org/>
+#
+# This file is free software; as a special exception the author gives
+# unlimited permission to copy and/or distribute it, with or without
+# modifications, as long as this notice is preserved.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY, to the extent permitted by law; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+set(GENREV_SRC
+  genrevision.cpp
+)
+add_executable(genrev
+  ${GENREV_SRC}
+)
+
+if( CMAKE_GENERATOR MATCHES "Visual Studio" )
+  add_custom_target("revision.h" ALL
+    COMMAND "${CMAKE_BINARY_DIR}/bin/$(ConfigurationName)/genrev"
+    ${CMAKE_SOURCE_DIR}
+    WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
+    DEPENDS genrev
+  )
+else()
+  add_custom_target("revision.h" ALL
+    COMMAND "${CMAKE_BINARY_DIR}/genrev"
+    ${CMAKE_SOURCE_DIR}
+    WORKING_DIRECTORY "${CMAKE_BINARY_DIR}"
+    DEPENDS genrev
+  )
+endif()
+