* New: In CRL/etc/symbolic/cmos45/kite.conf, new gauge "msxlib4" for both
routing and cells. Have only 4 metal layers but with all the same pitches
and width. Differs from the 45nm compliant where pitches double starting
from METAL4.
* New: In CRL/etc/symbolic/cmos45/plugins.conf, adjust default parameters for
the clock tree plugin so they are identical to the one of "cmos" (scaling).
* Change: In CRL/python/helpers/io.py, in catch(), do not set up the script
path here as it is non-informative.
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