Add libunwind patch from Pyston
Update linalg.rst

Complemented linreg() documentation
Corrected examples on linreg function

Removed the prompt and semicolons
fixes #6691, push access to METADATA should not be required for Pkg.publish(). Also check if any changes have been made.
Correct description of short-circuit evaluation

Add that final value in a conditional chain may be anything and provide an example
Return NaN for median of vectors containing NaN. Closes #6486
Cholesky factor should always be Triangular.
Merge pull request #6819 from simonp0420/patch-1

Correct description of short-circuit evaluation
Merge pull request #6820 from JuliaLang/sjk/median_nan

Return NaN for median of vectors containing NaN. Closes #6486
Merge pull request #6821 from simonbyrne/cholesky-tri

Make Cholesky factor always be Triangular. Fix odd transpose bug.
Fixes #6307, src/support and src/flisp makefiles didn't apply JCPPFLAGS.
Merge pull request #6824 from ncnc/ncnc/jcppflags

Fixes #6307, src/support and src/flisp makefiles didn't apply JCPPFLAGS.
text/markdown is nonstandard, but is now supported in IPython (ipython/ipython#5648) and is useful to recognize as a text type
Merge pull request #6799 from brk00/patch-1

Update linalg.rst
Merge pull request #6818 from simonbyrne/pkgpublish

push access no longer required for Pkg.publish()
Merge pull request #6827 from tkelman/patch-libunwind

Add libunwind patch from Pyston
define == instead of isequal for some Base types
fix #6826, recover better from expressions nested too deeply
rename: deps/0001-Change-the-RBP-validation-heuristic-to-allow-size-0-.patch -> deps/libunwind.patch

Just mentioning the original name of the file violates the git commit
message line length standards.