proof-of-concept for fixing debian #731102
add test, deal with InRelease
refactor and move generation of the MetaIndex FileName out of the FindSrc()
further refactor, extract GetReleaseForSourceRecord() out of FindSrc(), write out the selection notice to c1out to be consistent with the rest of the source
add test for aptget source for unavailable package
refactor FindSrc()
use MetaIndexFile() instead of MetaIndexURI()
add #ifdefed ABI break & cleaner solution once the abi break is in place
refactor
add new LocalFileName() method to metaindex
remove exposing {MetaIndexInfo,MetaIndexFile,MetaIndexURI} again as this is package system specific
vendor/makefile: fix build error for parallel builds
vendor/debian/makefile: apply 6f3c4e33 for debian/makefile as well
Handle SIGWINCH in APT::Progress-Fancy=1
fix build failure with the new apt-vendors stuff
releasing package apt version 0.9.13.2
fix release script to deal with vendors

Call xmllint with each vendor to check if any vendor specific errors are
present, but check the translations only with one vendor to check for
translation specifics – vendor and translation specific isn't possible.

Git-Dch: Ignore
tell the release script that we use git now

Git-Dch: Ignore
update libapt-pkg4.12 symbols file

also fixing the release script code to deal with 'set -e' mode while
checking the symbols file.
releasing package apt version 0.9.14