Prevent of nss-sysinit disabling on package upgrade (#636787):
Change system-pkcs11.txt to have nsssyinit turned on by default and
add posttrans syninit scriplet as replacement to post and preun ones
Create pkcs11.txt with correct permissions regardless of umask (#636792)
Setup-nsssysinit.sh reports whether nss-sysinit is turned on or off (#636801)
Add provides nss-pkcs11-devel-static to comply with packaging guidelines (#609612)
