[test] GC test on boxed Int, but not unboxed Int.
Use separate virtual function call to clear out stack variables and make gc test more reliable.
[test] Added `object = null`, which seems to be required to let the GC collects the object soon enough when `-debug`.
Fix dynamic versions of atan, acos, asin, exp
Fix variable offsets, add dynamic fields, add Array.Any builtins.  Add get/set dynamics
No need to link getters for interfaces
Fix dynamic exp again.
Mark closures, Use global context.  Call the specific length __run commands in prefernce to the array call
Inherit CppiaExprs from correct base
Add function to check age of objects
Use hx::Throw and include another String::operator new to fix compilation
Do explicit converstion of return types.  Use setjmp/longjmp for returning
Git crap
Update Macros.tpl
Experiment with setjmp/longjmp for break.  Add some special hxcpp globals
Investigate alternate flow control methods.  Remove debug in EnableGC
[test] delay 2 seconds before checking gc
minor - indentation fix
[skip ci]
[TravisCI] XQuartz is now pre-installed.
Do not use SJLJ for break/continue from loops