Only create the state dir if asked for a restartable build:

- introduce the config dir, where components can store their config files
- move the munged uClibc config file to the config dir
- now, the state dir really is an indication that a build can be restarted

Thanks to Groleo Marius <groleo@gmail.com> for spotting the inconsistency
of the state dir usage, and suggesting this change.

 /trunk/scripts/build/libc/uClibc.sh |    6     3     3     0 +++---
 /trunk/scripts/crosstool-NG.sh.in   |    9     7     2     0 +++++++--
 /trunk/scripts/functions            |   15    12     3     0 ++++++++++++---
 3 files changed, 22 insertions(+), 8 deletions(-)

0 files changed, 0 insertions, 0 deletions