various improvements and fixes
ca passphrase can now be generated by a shell function in order to
allow for fancy password protection schemes such as secret sharing
New feature: secret sharing for CA passphrase, based on
OpenXPKI::Crypto::Secret::Split (Shamir's Secret Sharing).
Uses a nasty hack to simulate the OpenXPKI class hierarchy, but works for
now.
Includes two runbooks for a simple CA and one with Secret Sharing.
fixed error in runbook (passphrase contained superfluous PASSPHRASE=
literal prefix)
... and fixed "the other side" (reconstruction of passphrase) as well
to exclude PASSPHRASE= prefix printed by the command
added build infrastructure for Debian Live CD
rewrite of the build-iso script, modularized build process
modified build process for Wheezy
minor bugfixes
renamed nfast addon
work in progress
added missing packages
Revert "added missing packages"

This reverts commit 4c7080bac18dd7d936290bf886c72910398d4926.
Merge branch 'develop' of github.com:openxpki/clca into develop
add dosfstools and pandoc packages
log output to build.log
include example for secret sharing callback in clca.cfg
distinguish between "root ca" and "issued certificate" extensions
cleaned up openssl configuration to facilitate issuance or different
profiles for selfsigned root and issued certificates
configuration update