fix(coreos-base/coreos-base): mawk provides awk on target images

Link awk to mawk and block gawk for target builds to avoid conflicts.
fix(coreos-base/coreos): Add gzip and less to base image.

Basic tools others expect! Other tools missed them dearly.
Merge pull request #4 from marineam/util-fixes

Util fixes
Merge pull request #3 from marineam/resize-state

bump(coreos-base/coreos-init): new auto-grow version
fix(coreos-init): start splitting startup into multiple units

This is the first round of splitting up the coreos_startup script into
multiple units, starting with using systemd to mount the state and oem
partitions. This lets us use systemd to get device dependencies right.

Also cleanup whitespace, I forgot ebuild style requires tab characters.
Sync up -9999 version which I missed in previous commits.
Revert "fix(coreos-base/coreos-base): mount /var/run tmpfs"

This reverts commit 24b5eb508d5bf88c40fcdb30ce987aed020638bf.

No longer needed as systemd is installed with a unit to bind /var/run to
/run which is always a tmpfs mount. Binding the two seems cleaner.