18:23 vd 

Remove patch-src_plugins_pngextractor.c: libextractor now has its own
implementation of strnlen().

06:14 mezz 

- USE_LIBLTDL and GNU_CONFIGURE -> USE_AUTOTOOLS=libtool:15 libltdl
- Add CONFIGURE_ENV stuff or it will not working if it's install in
  the different prefix.
- Do not extract libltdl to ensure that it will using system one.
- Kill, kill, kill the ^M.
- Respect more on ${PTHREAD_LIBS} (ie: kill the hardcore of -lc_r)
- Add autocheck on ImageMagick and libvorbis, which its configure
  will doing the autochecks then enable the plugins by automatic.
  It fixes the plist and dependency.
- Add strnlen() function, a non-standard, that is not exist in
  FreeBSD libc, which is need for the libextractor_png.so. Without
  it, evidence will complaining like this:

  /libexec/ld-elf.so.1: /usr/local/lib/libextractor/libextractor_png.so:
  Undefined symbol "strnlen"
- Bump the PORTREVISION.

Reported by:    tmclaugh (strnlen function stuff)
Reviewed by:    jylefort
Approved by:    kevlo (maintainer)