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

core/image/png/png.odin

@@ -8,7 +8,7 @@
 */
 
 
-//+vet !using-stmt
+#+vet !using-stmt
 package png
 
 import "core:compress"

core/image/png/png_js.odin

@@ -1,4 +1,4 @@
-//+build js
+#+build js
 package png
 
 load :: proc{load_from_bytes, load_from_context}

core/image/png/png_os.odin

@@ -1,4 +1,4 @@
-//+build !js
+#+build !js
 package png
 
 import "core:os"