[cpp] add INFINITY to the list of remap symbols
TravisCI: Auto retry (3 chances) if there is an error in a SauceLabs testing.
Merge pull request #2583 from andyli/travis

TravisCI: Auto retry (3 chances) if there is an error in a SauceLabs
add haxedoc to uninstall in Makefile (closes #2582)
fix Int+UInt=UInt generation (close #2082)
changed Std.instance definition (close #2534)
remove invalid Std.instance tests
detail Std.instance and fix unit tests accordingly
[Js] fix Std.instance
use statically known length when accessing length field of inlined array (closes #2568)
consider type parameters for generic paths (closes #2576)
[cpp] combine string constant terms into single string