The `-f make/gcc.mak` option is still required for the latest stable
release, but `make/gcc.mak` was made unnecessary and removed in cc65
commit 9fece990bea6525bec5afd8b60d1c731a4d13839 in 2013, so providing
that option for HEAD builds causes an error.
ClosesHomebrew/homebrew#34639.
Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>
The original cc65 and the stable branch have ceased to be maintained as
of March 2013. This moves the Homepage and the HEAD build to the new
location, and adds a code comment as to the status of cc65.
ClosesHomebrew/homebrew#32143.
Signed-off-by: Jack Nagel <jacknagel@gmail.com>
