Fix Mac OS-X include compile issue.
Add PINCONNECTEMPTY warning.
Fix Mac OS-X test issues.

Signed-off-by: Wilson Snyder <wsnyder@wsnyder.org>
Fix missing coverage line on else-if, bug727.
Internals: Fix assignment pattern replication. From bug355 branch.
Internals: Add dtype to InitArray; misc Slice cleanups. From bug355 branch.
Support '{} assignment pattern on arrays, bug355.
Internals: Make const iterator to fix missed-edits on dump. Merge from bug683 branch.
Internals: Remove dead NEW_ORDERING code.
Order initial statements based on variables used. Merge from bug683 branch.
Support parameter arrays, bug683.
Fix modport function import not-found error.
Tests: Fix unsupported items.
With high c-splits, even split blank functions.
Fix power operator calculation, bug730.
Fix signed extension problem with -Wno-WIDTH, bug729.
Re-fix bug729 due to bug733; other internal sign extension cleanups too.
grammar support for steaming operator (non-func)

Streaming grammar rules from VerilogPerl. Initially non-functional.
AstStreamL (and AstStream) with width check

new AstStream/AstStreamL class
width check for AstStream parameters
opStreamL applies left streaming operator