Log message:
Fix FreeBSD 10.0 clang build

* clang is needed as C preprocessor. Do not fail configure script.
* Disable -Werror flag

Log message:
Bump for perl-5.20.0.
Do it for all packages that
* mention perl, or
* have a directory name starting with p5-*, or
* depend on a package starting with p5-
like last time, for 5.18, where this didn't lead to complaints.
Let me know if you have any this time.

Log message:
Import libfreehand-0.0.0 as converters/libfreehand.

Libfreehand is library providing ability to interpret and import
Adobe/Macromedia drawings into various applications. You can find
it being used in libreoffice.