Adds collection FILES_TMP_CONTENT

The collection is filled with a key-value set where value is the content of
the file which was uploaded. This collection can be used with all supported
operators, however, SecTmpSaveUploadedFiles should be set to 'On' in order
to have this collection filled. Note that @inspectFile is now depending on
SecTmpSaveUploadedFiles. This is necessary to keep performance while such
functionalities where not used.
Adds ssdeep support in our build system

ssdeep will be used with the @fuzzyHash operator which is under
development
Adds fuzzyHash operator

The fuzzyHash operator can be used to match files. In conjuntcion
with FILES_TMP_CONTENT collection it can scan uploaded files and
try to match it with a pre caculated list of know malicious content,
more details on how it works can be found on ssdeep website:
http://ssdeep.sourceforge.net/
iis: Adds ssdeep support