Fix potential segfault (check malloc return value).

Fix a potential segfault.

Fix a double malloc.
Fix potential segfault.

We already had the discussion (again) a few weeks ago. If you want
non-ASCII code points in the American English locale, create po/en.po
or po/en_US.po

It was causing deadlocks (due to misordering of structure_lock and
object locks). Besides, this hack should not be needed now that we have
libvlc_wait(), and that libvlc_release() explicitly calls
vlc_object_kill as needed.

Changes:
1. Don't send Connection: close or Connection: Keep-Alive.
    So we will maintain a persistent connection with HTTP 1.1.
2. Close the connection if and only if the server does not send
   Connection: close, and a zero length is received indicated by either
   Content-Length: 0 or a 0 length size in the byte range.
3. Correct i_remaining to deal with file larger than 2GBi.
4. Update i_remaining in Read and OpenWithCookies.
5. Use -1 for uninitialized size so we can tell the difference from a
   zero length result.
Signed-off-by: Rémi Denis-Courmont <rdenis@simphalempin.com>

That commit broke audio sample rate changing.

This reverts commit ddac67aa.

Saves linking against the C++ runtime,
and allows libtool to generate the symbols table properly.

sure if I didn't miss some spots where that was missing). Thanks to
Kevin DuBois for finding the bug. (This should fix some audio
transcoding crashes)

transcode.

if something similar is needed for audio filter2 ... I don't think it
is)

code from ILEoo (not sure what this actually does)