man/make.conf.5: SYNC ssh examples, bug #470152
doebuild: fix emerge --fetchonly FEATURES=digest

This removes obsolete parallel-fetch code which is no longer needed,
since EbuildFetcher no longer calls doebuild.
Fix emerge --fetch --digest for bug #470238.
EbuildBuild: don't digest if fetch failed
JobStatusDisplay: fix tigetstr for pypy-2.0_beta2

This will fix bug #470258.
docs: metadata/cache is now md5-cache bug #470154
Flag  -Wsizeof-pointer-memaccess warnings.

This will fix bug #470224.
RELEASE-NOTES: ACCEPT_RESTRICT in 2.1.12
Support PORTAGE_SSH_OPTS, bug #470002.

Additional ssh options to be used when portage executes ssh or sftp.
This variable supports use of embedded quote characters to quote
whitespace or special shell characters within arguments (embedded
quotes must be escaped in make.conf settings).
Fix RESTRICT=test message for bug #469332.
test_getconfig: sync FETCHCOMMAND_SFTP/SSH
EMERGE_DEFAULT_OPTS: shlex for embedded quotes
*_DEFAULT_OPTS: shlex for embedded quotes