Update metadata
remove ebuilds unrelated to bitmask
dev-python/taskthread: fix repoman warning
dev-db/sqlcipher: import from https://gitorious.org/eigennet/eigenlay
dev-python/enum34: import from gx86
dev-python/enum34: add ~x86 keyword
dev-python/scrypt: import from dev-zero overlay
dev-db/sqlcipher: fix LICENSE
dev-python/scrypt: add metadata.xml
net-misc/bitmask_client: fix repoman for the time being