Log Message:
devel/ruby-ffi: update to 1.13.0.

Update ruby-ffi to 1.13.0.

1.13.0 / 2020-06-01
-------------------

Added:
* Add TruffleRuby support. Almost all specs are running on TruffleRuby and \ 
succeed. #768
* Add ruby source files to the java gem. This allows to ship the Ruby library \ 
code per platform java gem and add it as a default gem to JRuby. #763
* Add FFI::Platform::LONG_DOUBLE_SIZE
* Add bounds checks for writing to an inline char[] . #756
* Add long double as callback return value. #771
* Update type definitions and add types from stdint.h and stddef.h on \ 
i386-windows, x86_64-windows, x86_64-darwin, x86_64-linux, arm-linux, \ 
powerpc-linux. #749
* Add new type definitions for powerpc-openbsd and sparcv9-openbsd. #775, #778

Changed:
* Raise required ruby version to >= 2.3.
* Lots of cleanups and improvements in library, specs and benchmarks.
* Fix a lot of compiler warnings at the C-extension
* Fix several install issues on MacOS:
  * Look for libffi in SDK paths, since recent versions of macOS removed it from \ 
`/usr/include` . #757
  * Fix error `ld: library not found for -lgcc_s.10.4`
  * Don't built for i386 architecture as it is deprecated
* Several fixes for MSVC build on Windows. #779
* Use `ucrtbase.dll` as default C library on Windows instead of old \ 
`msvcrt.dll`. #779
* Update builtin libffi to fix a Powerpc issue with parameters of type long
* Allow unmodified sourcing of (the ruby code of) this gem in JRuby and \ 
TruffleRuby as a default gem. #747
* Improve check to detect if a module has a #find_type method suitable for FFI. \ 
This fixes compatibility with stdlib `mkmf` . #776

Removed:
* Reject callback with `:string` return type at definition, because it didn't \ 
work so far and is not save to use. #751, #782