Devectorize norm calculation and avoid code dublication.
Document that map can operate on multiple collections.
Merge pull request #5634 from ArchRobison/adr/doc-map

Document that map can operate on multiple collections.
use + instead of (x,y)->x+y

yes, everybody knows this is my pet peeve :)
Some MCJIT fixes

- Remove some redundant headers that were renamed in 3.5, but not needed in 3.3
- Also disable avx and bmi in MCJIT until we fix remaining MCJIT bugs to avoid
that source of bugs
Verifier.h was used in debug mode
PrintMessageAction was removed in 3.5

Just dump the message to stdout
Merge pull request #5545 from JuliaLang/anj/norm

Norm cleanup.