unbreak build from #3078
try harder to print backtraces, even if the error itself fails to show
When calling help on undocumented DataTypes, show more information.
Merge pull request #3116 from kmsquire/type_help

When calling help on undocumented DataTypes, show more information.
Add missing chkstride1 to LAPACK wrappers
pkg2 refactor into submodules: Types, Read, Query, Write.

Types – data types required by other modules with basic functionality
Read  – functions read the state of a .julia repo (read-only)
Query – purely functional methods to transform info about .julia repos
Write – transactional functions to update the state of a .julia repo

The top-level ties it all together and provides a nice, usable interface
that makes sure you're in the right directory, etc.
remove use of jl_show_any and jl_print_symbol builtins, closes #3112
add write(IOBuffer, Ptr, nb)