Fixed file path bug in extractor.py where file names that are all digits were treated as integers rather than strings

Fixed some ROM signature and extraction bugs; added debug info during file open failures; updated plugins to use file.path instead of file.name

Signed-off-by: Tobias Schramm <tobleminer@gmail.com>

Added {end} tag to ISO signatures to prevent scanning inside of the ISO image and producing duplicate extractions

The previous QNX detection was erroneously using the QNX4 Boot block magic, but labelled QNX6. 
This PR fixes the labels and add the proper QNX6 Super Block magic, known as QNX6_SUPER_MAGIC.

For further details see: 
https://www.forensicfocus.com/Forums/viewtopic/t=16846/
https://github.com/torvalds/linux/blob/6f0d349d922ba44e4348a17a78ea51b7135965b1/include/uapi/linux/magic.h#L49
https://github.com/torvalds/linux/blob/master/fs/qnx6/inode.c

Find and extract Intel microcode updates. Useful for getting microcode updates for your device from alien uefi updates.

Modified extractor to report the actual extractor command that was executed, rather than the placeholder command in the extract.conf file.

MPFS (Microchip PIC File System)

Starting with IDA 7.0, the use of the Actions API is mandatory.
This enables Binwalk IDA plugin support for users of IDA versions 7.0+ without any compatibility changes for users of versions >= 3.95

More modern Ubiquiti devices use signed firmware with a different end header.

The new header start with the string "ENDS" which is followed by a 2048 bit
RSA sha1 signature.

The zero-padding used to identify the PART and END headers is not part
of the header itself but rather padding from previous data structures.
That is totally fine since the padding will always be there when
analyzing Ubiquiti firmware images.