Log Message:
lang/guile30: Update to 3.0.9

Changes in 3.0.9 (since 3.0.8)

* Notable changes [headlines only; see NEWS]

* New interfaces and functionality

** New `spawn' procedure to spawn child processes

** `open-file' now supports an "e" flag for O_CLOEXEC

** `pipe' now takes flags as an optional argument

** Bindings to `openat' and friends

** Abstract Unix-domain sockets are supported

** New socket-related constants defined

** New `bytevector-slice' procedure

** Disassembler now shows intrinsic names

** Linker and assembler consume less memory