HashLink 1.12

This new version of HashLink VM includes the following changes:

• support for hot reload
• added native int64 support (for x64 only, compile with -D hl-legacy32 to keep hl32 i64 emulation)
• added field name to null access exceptions
• added hl.Api.compact to compact a set of values into a single GC block
• better stack primitives for faster haxe throw
• added 16 bits PNG decoding (fmt)
• added captured stack for closures (when debugger connected)
• added ftell2/fseek2 for large file support
• added optional library support @:native("?lib","name") static function foo() : Void allowing runtime detection of libraries (as well as hl.Api.isPrimLoaded)
• changed Windows binary to use VS2015 (was VS2013)

Full Changes 1.11...1.12