Makefile.am: distribute COPYRIGHT and LICENSE in the tarball
Makefile.am: distribute README.md in the tarball
configure.ac: add missing AC_C_BIGENDIAN invocation

this is required by the CRC32C 'slicing' implementation (it checks
the WORDS_BIGENDIAN macro), which needs different behavior on big endian
systems.

this was caught by the debian buildd's, since the test suite was failing
on big endian architectures.
reader: explicitly check that the input has at least MTBL_TRAILER_SIZE bytes

this ought to fix debian bug #716628.
src/test-* -> t/

move the test source files from the src/ directory to the t/ directory.
Makefile.am: minor readability tweaks
Makefile.am: tests have been moved into the t/ subdirectory
test-deb716628: new

this adds a test case based on debian bug report #716628.
update gitignore files for the tests
split out gitignore files for mtbl/, src/ directories
configure.ac: bump version to 0.5
ChangeLog: 0.5
Makefile.am: set TESTS_ENVIRONMENT to the same value as AM_TESTS_ENVIRONMENT

according to the automake documentation, the AM_TESTS_ENVIRONMENT
variable is reserved for the developer, while the TESTS_ENVIRONMENT
variable is reserved for the user.

unfortunately, setting AM_TESTS_ENVIRONMENT doesn't appear to work with
the old version of automake that travis-ci uses, so hack around it by
also setting TESTS_ENVIRONMENT.
Makefile.am: make sure to install the manpages if they are available and BUILD_MAN is not set
ChangeLog: 0.5 update
man/: give up. just commit the compiled manpages!

it's not worth screwing around with this any more. just commit the
compiled manpage output into the git repository.
Makefile.am: fix missing \ in multi-line mtbl_libmtbl_la_LDFLAGS variable
Merge tag 'tags/v0.5' into debian
debian/control: drop Build-Depends on asciidoc, xmlto

these packages are only used when rebuilding the man page documentation,
which we no longer do at package build time.
debian/libmtbl0.symbols: update symbols for 0.5

mtbl 0.5 included a bug fix when initializing reader objects, so require
0.5 for those functions.