Clean up the pixel local reconstruction code (#602)

Address the pixel local reconstruction review comments:
  - remove obsolete comments;
  - consistently use named constants;
  - rename data members and methods to be more descriptive;
  - rename local variables according to the coding rules and for
    consistency with cms-sw#32591;
  - update transient dictionaries to match data types.

RecoPixelVertexing/PixelTriplets/plugins/gpuPixelDoubletsAlgos.h

@@ -50,9 +50,9 @@ namespace gpuPixelDoublets {
 
     bool isOuterLadder = ideal_cond;
 
-    using Hist = TrackingRecHit2DSOAView::Hist;
+    using PhiBinner = TrackingRecHit2DSOAView::PhiBinner;
 
-    auto const& __restrict__ hist = hh.phiBinner();
+    auto const& __restrict__ phiBinner = hh.phiBinner();
     uint32_t const* __restrict__ offsets = hh.hitsLayerStart();
     assert(offsets);
 
@@ -93,7 +93,7 @@ namespace gpuPixelDoublets {
       uint8_t outer = layerPairs[2 * pairLayerId + 1];
       assert(outer > inner);
 
-      auto hoff = Hist::histOff(outer);
+      auto hoff = PhiBinner::histOff(outer);
 
       auto i = (0 == pairLayerId) ? j : j - innerLayerCumulativeSize[pairLayerId - 1];
       i += offsets[inner];
@@ -175,10 +175,10 @@ namespace gpuPixelDoublets {
 
       auto iphicut = phicuts[pairLayerId];
 
-      auto kl = Hist::bin(int16_t(mep - iphicut));
-      auto kh = Hist::bin(int16_t(mep + iphicut));
-      auto incr = [](auto& k) { return k = (k + 1) % Hist::nbins(); };
-      // bool piWrap = std::abs(kh-kl) > Hist::nbins()/2;
+      auto kl = PhiBinner::bin(int16_t(mep - iphicut));
+      auto kh = PhiBinner::bin(int16_t(mep + iphicut));
+      auto incr = [](auto& k) { return k = (k + 1) % PhiBinner::nbins(); };
+      // bool piWrap = std::abs(kh-kl) > PhiBinner::nbins()/2;
 
 #ifdef GPU_DEBUG
       int tot = 0;
@@ -191,10 +191,10 @@ namespace gpuPixelDoublets {
       for (auto kk = kl; kk != khh; incr(kk)) {
 #ifdef GPU_DEBUG
         if (kk != kl && kk != kh)
-          nmin += hist.size(kk + hoff);
+          nmin += phiBinner.size(kk + hoff);
 #endif
-        auto const* __restrict__ p = hist.begin(kk + hoff);
-        auto const* __restrict__ e = hist.end(kk + hoff);
+        auto const* __restrict__ p = phiBinner.begin(kk + hoff);
+        auto const* __restrict__ e = phiBinner.end(kk + hoff);
         p += first;
         for (; p < e; p += stride) {
           auto oi = __ldg(p);