This patch causes us to build archictecture-specific test packages in the
OS X universal build postflight makefile, and unifies them into a universal
test-package (containing the same test files, but universal binaries), and
then special-cases the "package-tests" target to use that pre-generated
test package in the universal build case.
--HG--
extra : rebase_source : 41d1f3fe887a2dbdee3ad560ab46bcb261883690
Java .class files and Mach-O fat binaries use the same 4-byte magic
number at the start of the file. 'unify' uses the magic number to detect
Mach-O binaries, so it chokes on Java .class files. This change makes us
use the same heuristic as file(1), which is to check the second 4 bytes
in the file. Java class files put a version number there, and Mach-O
fat binaries put the number of contained architectures there. Conveniently,
Mach defines only 18 architectures, and Java's lowest shipping version
number is 43, so there's no overlap in valid values.
--HG--
extra : rebase_source : 84f5382bca6fa4bde721686f029514a41dfaf6b4
