We don't need to check for stddef.h if we have a good C++11 compiler. Anyone with a good C++11 compiler and no stddef.h deserves what they get.
Merge branch 'master' of github.com:jonstewart/liblightgrep

Conflicts:
	configure.ac
Merge branch 'master' of github.com:uckelman/liblightgrep
Added LG_Error** argument to lg_hit_context and lg_read_window. This is
necessary for reporting bad encoding chains.
If bison is installed, print out the version. We don't yet check for a requisite version number, but this is at least a start.
Merge branch 'master' of github.com:uckelman/liblightgrep
Merge pull request #7 from jonstewart/master

up-to-date