GLIBC 2.27 added new versioned symbols of powf and logf, while the double versions of pow and log remained stable.
Prefer the double version to avoid introducing a dependency on a newer version of GLIBC than strictly necessary.
See https://lists.gnu.org/archive/html/info-gnu/2018-02/msg00000.html
Previously, we used the existence of a `prior*` field in the Resource object as an indication for whether we should consult the cache or not. However, this is prone to error, since a failed cache lookup won't set any prior fields. Therefore, we manually set `priorExpires` to 0. This in turn triggered another bug where generated wrong expiration timestamps when the server response we got was expired (or expired between sending and receiving).
This commit changes the flags so that we can now explicitly request CacheOnly/NetworkOnly (or All) loading methods, rather than the implicit Optional/Required naming scheme.
* [core] Quadkey tokens in tile URL templates
Fixes#5485.
* [core] WMS tokens in tile URL templates
Fixes#822.
* [macos] Added WMS debug style
Added a style to the macosapp resource bundle that can be used to test WMS support. To use it, zoom in to somewhere in New Jersey, then go to View ‣ Custom Style and enter “wms.json”.
