Also ammends one of the tag tests to make sure it's working.

This reverts commit 28b1cdf3.

//cc #1262 #1267

A simple perf optimization in pack-objects.c

Handle packed peeled objects without trailing newlines

Fixes #1262

Update clar to a80e7f30

Parse commit time as uint64_t to avoid overflow

The commit time is already stored as a git_time_t, but we were
parsing is as a uint32_t.  This just switches the parser to use
uint64_t which will handle dates further in the future (and adds
some tests of those future dates).

When the encoding header changed to be treated as an additional
header, the EOL pointer started to point to the byte after the LF,
making the git__strndup call copy the LF into the value.

Increase the EOL pointer value after copying the data to keep the rest
of the semantics but avoid copying LF.

Fix really bad error handling in git_smart__negotiate_fetch

Fix linking error caused by ddcb28a4.

add an index_remove_bypath that removes conflicts

Move all non-ascii test data to raw hex

add a git config, don't run crlf tests on non-win32

This takes all of the characters in core::env and makes them use
hex sequences instead of keeping tricky character data inline in
the test.

A comparison of eviction algorithms for the delta base cache

Don't segfault if transport doesn't support push.

Add skipping of unknown commit headers

cache should contain on-disk (filtered) file size

This moves the check for the "encoding" header into a loop which
is just scanning for non-required headers at the end of a commit
header.  That loop will skip unrecognized lines (including header
continuation lines) until a terminating completely blank line is
found, and only then does it move to reading the commit message.

Instead, set an more informative error message.

Fix case insensitivity issues in git_status_file

Some doc improvements in transport.h

Introduce git_branch_tracking_name()

This makes tree iterators directly support case insensitivity by
using a secondary index that can be sorted by icase.  Also, this
fixes the ambiguity check in the git_status_file API to also be
case insensitive.  Lastly, this adds new test cases for case
insensitive range boundary checking for all types of iterators.

With this change, it should be possible to deprecate the spool
and sort iterator, but I haven't done that yet.

This adds a new external API git_tree_entry_cmp and a new internal
API git_tree_entry_icmp for sorting tree entries.  The case
insensitive one is internal only because general users should
never be seeing case-insensitively sorted trees.

This adds git_path_icmp to complement git_path_cmp.