stdin, stderr and stdout are constants on musl and it doesn't provide
mallinfo.
Both, overwriting std* were used to catch and work around various
misbehaviours of glibc, so it's hopefully save to just skip them when
building against other libc implementations.

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

Also add patch to fix blkid header location as suggested in #17877

Signed-off-by: Daniel Golle <daniel@makrotopia.org>