Add --with-static-system-libs, and drop -licuuc from the dmake LIBXML2LIB

Takes a comma-separated list (libxml, libxslt, curl) and rewrites each
"-lfoo" to the archive's absolute path, so a dylib si

Add --with-static-system-libs, and drop -licuuc from the dmake LIBXML2LIB

Takes a comma-separated list (libxml, libxslt, curl) and rewrites each
"-lfoo" to the archive's absolute path, so a dylib sitting beside it can't
win. Without it the choice is implicit -- and those dylibs carry absolute
install names that don't exist on an end user's machine.

LIBXML2LIB now filters -licuuc as RepositoryExternal.mk already did, so
dmake and gbuild consumers agree.

show more ...

xmlsecurity, forms: ignore-error prefix on $(shell test -f ...) dylib checks

xmlsecurity, forms: fix dmake "Shell escape" error from inline $(shell) in .IF

configure.ac: honor the directory given to --with-system-libxml/-libxslt/-curl

Link zlib explicitly against static libxml2.a on macOS

Link static libxml2.a instead of libxml2.dylib on macOS/arm64 and x86

Improve macOS/arm64 build linting a full run on Mac Silicon

pre-commit whitespace cleanup for `.component` files (#398)

Enforced 3 hooks for `.component` files:

- end-of-file-fixer
- mixed-line-ending
- trailing-whitespace

pre-commit auto whitespace cleanup for `.pmk` files (#399)

Enforced 3 hooks for `.pmk` files:

- end-of-file-fixer
- mixed-line-ending
- trailing-whitespace