Extract the config files related stuff from the kconfig stuff

- create config/config.mk, with all the config.gen/ rules
- the only common points between config files and configurators:
  - the top-level config file to include, stored in KCONFIG_TOP
  - the config_file rules, which makes config files available to configurators
- dependency-files are renamed from %.d to %.dep (.d is reserved for directories)
- a few eye-candy here and there

 /trunk/kconfig/kconfig.mk |  184    12   172     0 +++--------------------------------------------------
 /trunk/config/config.mk   |  118     9   109     0 +++-------------------------------
 /trunk/ct-ng.in           |    1     1     0     0 +
 3 files changed, 22 insertions(+), 281 deletions(-)

1 files changed, 1 insertions, 0 deletions

diff --git a/ct-ng.in b/ct-ng.in
index ec63c20..00e8798 100644
--- a/ct-ng.in
+++ b/ct-ng.in
@@ -92,6 +92,7 @@ help-clean::
 	@echo  '  clean              - Remove generated files'
 	@echo  '  distclean          - Remove generated files, configuration and build directories'
 
+include $(CT_LIB_DIR)/config/config.mk
 include $(CT_LIB_DIR)/kconfig/kconfig.mk
 include $(CT_LIB_DIR)/steps.mk
 include $(CT_LIB_DIR)/samples/samples.mk