Fix custom output directory for extracted files

Fixes regression since 5fdad3c5 which
ignored the -C option and wrote all files in the current working
directory.

Tested with:

    touch foo && gzip foo && mkdir bar
    binwalk -e foo.gz -C bar
    binwalk -e foo.gz

Improved support for DIR100D1/E1 firmware files

deps.sh: replace a leftover "sudo" with "$SUDO"

Added comment to extract.conf noting the use of an internal plugin for Hilink encrypted firmware extraction.

Fixed extraction bugs when recursively extracting multiple files at once; added some extraction API methods.

deps: check for package installation failure

Improve (U)EFI structures detection

GUIDs coming from https://github.com/LongSoft/UEFITool/blob/new_engine/common/ffs.h

Invalidate capsules with unrealistic sizes, but would be better to check
against the remaining data length.

This should avoid reporting a number of false positives on UEFI PI headers,
and includes a list of known filesystems based on
https://github.com/LongSoft/UEFITool/blob/new_engine/common/ffs.h