export heapify from Collections. closes #6497
fix #6243 (missing ?? metahelp)
Fix #6518
Merge pull request #6526 from amitmurthy/amitm/6518

Fix #6518
Fix factorization for symmetric tridiagonal matrices
Dump EmittedFunctionDetails to sysimage
Fix #6509 (recognize _ in numeric literals in textmate syntax highlighting)
Merge pull request #6531 from malmaud/master

Fix #6509 (recognize _ in numeric literals in textmate syntax highlighting)
fix some issues with sparse reductions
fix error in last sparse reductions change
Restore linedebug info from sysimage

- Fiddles with FuncInfo struct to optionally store name and filename info
- sysimg_handle -> jl_sysimg_handle (not exported)
- adds jl_restore_linedebug_info(uv_lib_t*)
Merge pull request #6490 from ihnorton/dump_linedebug

Dump EmittedFunctionDetails to sysimage
reshape for sharedarray
Fix build error on LLVM trunk

MCDisassembler now requires an MCContext argument.
reverse range with select gives empty result. fixes #6534
Merge pull request #6537 from octoploid/master

Fix build error on LLVM trunk
- validate dims
- set A.s correctly
- fix assert_same_host for case when myid() not in pids
Translate ziggurat algorithms for normal and exponential variates to Julia.
Adjust array/scalar promotion to handle rationals and complex numbers.
Merge pull request #6538 from tanmaykm/tanmaykm

reverse range with select gives empty result. fixes #6534