fix potential bug in codegen of "empty" arguments (e.g. (), nothing) that
have a memvalue due to being assigned.
Doc: fix malformed tables in linalg
Doc: update darray -> DArray cross-references

Fix some spelling and punctuation also.
copy!(S::SharedArray, A::Array) should return S
Merge pull request #6519 from tanmaykm/sharedarray

copy!(S::SharedArray, A::Array) should return S
add readlines(). closes #6511
small improvement to tupleref_elim_pass
Merge pull request #6508 from jacg/docfix

Docs: added methods list before text which describes it.
fix doc typo
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*)