Better string representation of ErisTypeInfo userdatas
Better string representation of ErisTypeInfo userdatas

This adds a l_typeinfo_tobuffer() function which writes a representation
of an ErisTypeInfo to a luaL_Buffer. This allows to report Lua errors
with more precise type information, and the code is also reused to
provide the implementation of the l_eris_typeinfo_tostring() metamethod.

aperezdc/lua-eol,aperezdc/lua-eol,aperezdc/eris,aperezdc/eris