plow*: absolute_path, drop useless statement
oboom (upload): fix folder ID parse
chomikuj (list): add support for protected folders

Fixes issue 1107.
chomikuj (list): remove cookie on error
filefactory (download): upstream changed

Fixes issue 1112.
core.sh: prefer "command xxx" over "$(type -P xxx)"

command builtin help overriding local function (for example: curl is an executable and also a function name in core.sh).
Also use bash4 builtin error-handling function command_not_found_handle().
core.sh (log_notice_stack): use builtin double-brackets instead of match()

match function invokes grep.
sendspace: fix https

Fixes issue 1114.
uptobox (download): fix, upstream changed

Site uses Solvemedia CAPTCHAs now
Fixes issue 1110
rapidgator (login): fix parsing of account type, upstream changed

Fixes issue 1116
uptobox (download): fix wait regexp

Here I have:
<br /> <b><font color="red">Enter code above<br /><br />and wait</b><strong><span id="5pz1x7">45</span> seconds</font></strong>
uploadable_ch: file not found message fix
oboom (download): add missing filesize case
billionuploads: fix file not found message
plowprobe: comment fix

Plowprobe has its own section in configuration file.
Bug introduced in revision d9e346472ba66ed30f269214cd997da6de3c67d7

<diff>
-                process_configfile_module_options 'Plowdown' "$MODULE" PROBE
+                process_configfile_module_options '[Pp]lowprobe' "$MODULE" PROBE
</diff>
plowprobe: fix unwanted debug message

When --follow is disabled:

<code>
$ plowprobe -v3 http://thefile.me/sjs56qwu7dwa
dbg: Skip: 'http://thefile.me/sjs56qwu7dwa' (in http://thefile.me/sjs56qwu7dwa) doesn't seem to be a link
Skip: no module for URL (http://thefile.me/)
</code>

debug message must not be written in that case.
docs: prefer "verbosity level" to "verbose level"
multiup.org (list): fix

The "continue button" page seems to be remembered server side and not in cookies (PHPSESSID) anymore.
download.sh, probe.sh: cosmetics, drop useless double quotes in simple variable assignment
download.sh, core.sh: use string concatenation notation

This requires Bash 3.1+