builtin libz, ARM cross-compile

[David Hedbor]

Here's another minor issue  - when I compile physfs using the arm
cross compiler (./configure --host=arm-linux to be exact), it fails if
I don't have a preinstalled libz.a. After closer investigation it
seems like the Makefile in the zlib directory doesn't contain any
targets to actually compile the library. Known bug or bitrot (due to
having a preinstalled zlib)?

-- 
[ Below is a random fortune, which is unrelated to the above message. ]
Q:	Why did the chicken cross the road?
A:	He was giving it last rites.