tests: Add trace file testing support to the Documents test suite
documents: Fix default value of GDataDocumentsUploadQuery:convert

Also add a test for it, because tests are good.
tests: Fix kinds of uploaded documents used in the Documents test suite

I’m sure this worked before, so it looks like Google has tightened up
input validation a bit. Not a bad thing.
tests: Remove --no-internet option in favour of trace files

All unit test suites now support running against committed trace
files, so the --no-internet option can now be removed.
tests: UNFINISHED fixes to mock server/resolver support

One of these days I’ll tidy up these commit messages.
build: Update git.mk from upstream
build: Use AM_C[PP]FLAGS instead of INCLUDES

Let’s live in the future.
build: Use AC_CONFIG_AUX_DIR

This tidies away various autoconf/automake files so they don’t pollute
the root directory. It also ties in with recent git.mk improvements so
these files are automatically included in .gitignore.
build: Update MAINTAINERCLEANFILES
fixup! tests: Add trace file testing support to the PicasaWeb test suite
fixup! tests: Add trace file testing support to the Documents test suite
tests: UNFINISHED more changes to mock server
tests: General support for mock server traces in async tests
tests: Fix a memory leak in the PicasaWeb unit tests
fixup! tests: UNFINISHED additions to allow custom replies
fixup! tests: Add HTTPS port override and extra tests for YouTube
fixup! tests: Add trace file testing support to the Contacts test suite
fixup! tests: Add trace file testing support to the Calendar test suite
tests: UNFINISHED work to fix up ports for redirects
fixup! tests: General support for mock server traces in async tests