Partially fix #530

It causes the clar testsuite to abort on Windows, and isn't necessary.

Smaller, simpler, faster.

git_commit() and git_tag() no longer prettify the
message by default. This has to be taken care of
by the caller.

This has the nice side effect of putting the
caller in position to actually choose to strip
the comments or not.

These are deprecated and replaced with the diffing code in git2/diff.h

This function will create blobs in the object database from files anywhere on the filesystem. This can be run against bare and non-bare repositories.

object: make git_object_lookup() return GIT_ENOTFOUND when searching for an existing object by specifying an incorrect type

This fix complements cb0ce16b and cover the following additional use cases

 - retrieving an object which has been previously searched, found and cached
 - retrieving an object through an non ambiguous abbreviated id

object: make git_object_lookup() return GIT_ENOTFOUND when searching for an existing object by specifying an incorrect type

'git commit' and 'git tag -a' enforce some conventions, like cleaning up excess whitespace and making sure that the last line ends with a '\n'. This fix replicates this behavior.

Fix libgit2/libgit2sharp#117

Signed-off-by: schu <schu-github@schulog.org>

in tag/write.c.

Also cleaned up some previously converted code that still had
little things to polish.

To conform the naming scheme of git_oid_fromstr we should change the
name of git_oid_to_string to git_oid_tostr.

Obviously all the old throw routines are still in place, so we can
gradually port over.