use fs_fileno to get the stdout file descriptor.

fixes compilation with cl.exe

windows: set standard streams to O_BINARY

This prevents things like muon fmt mangling newlines in files.  Further
consideration will be required when people decide they actually want
muon fmt to output crlfs.

"fix" static linking on windows

The real fix for this will probably involve a muon internal script, as
we definitely can't guarantee sh on windows.

Add cl and clang-cl compilation support

switch fortify source build to use clang

add missing cd per task

add task to test muon with -D_FORTIFY_SOURCE=3

break up tasks

add libclang-rt-dev dep to debian build

fix potential buffer overrun

fix print-search-dirs flag

clean up .. from paths before relativizing

path_relative_to does not handle .. specially, rather it relies on the
incoming paths to have all extraneous .. removed.

fix typo in cpp link args option name

remove memory leaks from editorconfig parser

pin alpine image version

Since the community repo was using latest-stable, when alpine updated to
3.18 but the image was still on 3.17, incompatible packages got pulled
into the index.

fix all hardcoded object extensions

return disabler from find_program(required: false)

if disabler: true

set object file extension from compiler

copy c or cpp args to assembly args

document different default builtin option values