Updated errno doc. Ref #5485
Merge pull request #5488 from ivarne/errno_doc

Updated errno doc. Ref #5485
indenting fixes
Merge branch 'master' of github.com:JuliaLang/julia
add a simple deparser to the front-end for better syntax error messages

fixes #5484
base/complex.jl: use Complex constructor instead of complex function
base/bool.jl: use ifelse for Int^Bool.
add an optional argument to errno for setting it

use cglobal instead of jl_errno

move errno-related functions to C interface section of docs
Merge branch 'master' of github.com:JuliaLang/julia
Add dimensions checks to the umfpack linear solvers.

Closes #5495.
Remove debugging printout from previous commit
utf8proc directly calls `ar` to build libraries.  We need it to call `$(AR)` instead, for cross-compiling.

Because their source contribution process isn't very friendly, and this is a pretty specific issue I'm gixing, I'm just including a patch in our repo.
updated --machinefile option doc
Merge pull request #5501 from amitmurthy/amitm/5489

updated --machinefile option doc