Release v3.0.4

• Build system portability fixes
• Fix make check exit code

e2ba7fe64149d8886f7e7719b15dbd1831c798a9f25fda936622c8e1a48088bc  libtree_aarch64
7ad903c172217c0842845e964ade4ae85c7212d6e3f36b5bd945360b9da62faf  libtree_armv6l
9b36a4c9a0548f8bf3dfa89db6d134ee78ccd4fca05ec62fe095e6df9b07daae  libtree_armv7l
501c8d9293a24b1222dba8ef237811209aa49e4610407d387a3210ef5f2ea2f0  libtree_i686
58f6e4895d0fece4b37681dda82158d1c491ecaaef942d22cf2e968458b619a0  libtree_x86_64