The `switch_split_date` and `switch_split_time` functions only set as
many variables as they believe exist values in the input string.
Since we didn't have defaults assigned we would read undefined stack
memory if the input string didn't contain e.g. an hour.

With this commit, we use 1970 if no year is present, January if no
month is present, the first day of the month if none is given, and
zero for each of a missing hour, minute, or second.

We're moving the variable declarations down to the smallest possible
scope (a good idea in general) so we can address the use of undefined
memory by the function in a later commit.

mod_curl currently does not verify the authenticity of the peer's
certificate, and does not verify whether the common name on the
certificate matches the server.  This makes mod_curl initiated TLS
connections completely insecure.  We should fix this, but until we do,
we'll warn people that it's not doing what they may think it is.

ref: http://curl.haxx.se/libcurl/c/CURLOPT_SSL_VERIFYPEER.html
ref: http://curl.haxx.se/libcurl/c/CURLOPT_SSL_VERIFYHOST.html

* commit 'c736cf2f':
  Add sofia gateway parameter "destination-prefix"
  FS-5497 add sofia gateway parameter destination-prefix in case you need to send Invites with prefix only to this gateway

mod_graylog2: channel variables can now be automatically added as gelf additional fields in logs w/ session UUID

`curl_sendfile` generates a multipart message with Content-Type:
multipart/form-data with no separate Content-Type headers in the parts
for each non-file argument.  These parts therefore default to
text/plain.  However, prior to this commit, we were putting the URL
encoded POST data into these parts, which is not correct.  We should
be putting raw text into the parts.

With this commit, we urldecode each argument key and value before
composing the multipart message.

See:

  http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4.2

FS-5497 add sofia gateway parameter destination-prefix in case you need to send Invites to your provider with prefix only to this gateway

FS-5497 add sofia gateway parameter destination-prefix in case you need to send Invites with prefix only to this gateway

* commit 'd1abf274':
  REFER_EVENT is missing from the message names array

* commit '4d0b875d':
  fix mod_fifo presence https://jira.freeswitch.org/browse/FS-6732

usleep is deprecated and disabled in glibc 2.12 unless requested. Use
nanosleep instead if available.

This fixes the following compiler warning:

    ./src/zrtp_iface_scheduler.c: In function 'zrtp_sleep':
    ./src/zrtp_iface_scheduler.c:96:2: warning: implicit declaration of
    function 'usleep' [-Wimplicit-function-declaration]
      usleep(msec*1000);
      ^

These two files should only be built when OpenSSL is not enabled. See
the configure script of the original sources and Makefile from upstream.
(RNG_EXTRA_OBJS)

Fixes a -Wimplicit-function-declaration warning.

* commit '05ef1894':
  add uptime api to mod_commands

* commit 'b60df39b':
  mod_http_cache: fix configuration so that carriage returns or other whitespace is OK around S3 keys
  mod_http_cache: fixed S3 URL parser to allow mybucketsubdomain.com.s3.amazonaws.com

https://jira.freeswitch.org/browse/FS-6732

* commit 'fe2a6e8a':
  FS-6620 mod_blacklist fix not deleting entries from list