Machine: Move -nostdlib flag from CFLAGS to LDFLAGS
Machine: Move -nostdlib flag from CFLAGS to LDFLAGS

The `-nostdlib` is a flag relevant to the linkage step and thous would be
a better fit for LDFLAGS instead of CFLAGS.

Furthermore, `-static-libgcc` has been removed because it is not
effective with `-nostdlib` because libgcc is not linked implicitly but
must be specified explicitly, including the type.

ChristianMoesl/selfie,cksystemsteaching/selfie,cksystemsteaching/selfie,cksystemsteaching/selfie,ChristianMoesl/selfie