Moved all packages in core, base, vendor, tests and examples to use new #+ file tag syntax.

core/dynlib/lib_js.odin

@@ -1,5 +1,5 @@
-//+build js
-//+private
+#+build js
+#+private
 package dynlib
 
 _load_library :: proc(path: string, global_symbols := false) -> (Library, bool) {

core/dynlib/lib_unix.odin

@@ -1,5 +1,5 @@
-//+build linux, darwin, freebsd, openbsd, netbsd
-//+private
+#+build linux, darwin, freebsd, openbsd, netbsd
+#+private
 package dynlib
 
 import "core:os"

core/dynlib/lib_windows.odin

@@ -1,5 +1,5 @@
-//+build windows
-//+private
+#+build windows
+#+private
 package dynlib
 
 import win32 "core:sys/windows"