Remove ol-simple.js build

We've proven that we can, but that doesn't mean we should be building with `SIMPLE_OPTIMIZATIONS`.
Generate a ol-debug.js script useful for debugging

Instead of running everything through the Compiler just to remove whitespace, we provide a build that is a simple concatenation of all scripts in dependency order.  This build (ol-debug.js) should never be used in production (the same applies to the old ol-whitespace.js build).  Instead, the intention is that it be used to aid in debugging during development.
Two ways to run the hosted examples: compiled and raw

When viewing the hosted examples, people can load the compiled version of the library or load each script individually.
Removing the build-all target

The ol-all.json and ol.json build configurations differ only in their use of the manage_closure_dependencies Compiler option.  I don't think there is value in running both (there are plenty of other compiler options that we don't exercise in this same way).
Conflate ol.format.GPX.V1_1 and ol.format.GXP into ol.format.GXP
Start earlier to log points for kinetic
Ensure that the first point for kinetic is valid
Remove ol.pointer.PointerEvent.createMouseEvent

The externs declarations for MouseEvent are now fixed upstream
Merge pull request #2411 from fredj/createMouseEvent

Remove ol.pointer.PointerEvent.createMouseEvent
Handle cases where the x-axis distance cannot be calculated
Merge pull request #2406 from ahocevar/scaleline-infinite

Infinite loop in ol.control.ScaleLine
Removing unused ol.proj.CH
Merge pull request #2404 from tschaub/builds

Two ways to use the library: advanced compilation (prod) or raw/concatenated (dev).
Merge pull request #2412 from tschaub/unused-proj

Removing unused ol.proj.CH.
Merge pull request #2405 from tsauerwein/kinetic-fast

Improve kinetic effect when panning fast
Document debugtilesource
Merge pull request #2415 from probins/debugtile

Document debugtilesource
Merge pull request #2403 from bartvde/gpx-write

ol.format.GPX writeFeatures is not working
Update buildcfg/readme
Remove unnecessary newlines