Overhaul Makefile binary and release worflows

* Incorporate changes from abandoned #9918: Use dedicated `bin`
  sub-directories for `windows` and `darwin` when building
  `podman-remote`.  The linux flavor remains under `bin` as before.

* Fix MacOS Documentation-generation for release-packaging.
  The `install-podman-remote-%-docs` target requires local execution
  of `podman-remote`, but it was assuming GOOS=linux.  Fix this
  by dynamically discovering the local OS/architecture type while
  still permitting cross-building of MacOS binaries under Linux.

* Unify temporary directory/file behavior to use a common template.
  In case of left-over temporary items left in the repository,
  update the `clean` target accordingly to remove them.

* Fix broken podman-remote-static and MacOS release archive targets
  mismatching the `podman-remote-%` target.  Disambiguate this target
  for all platforms by spelling each out in full, instead of using
  a wild-card recipe.

* Fix Windows-installer target to properly recognize existing
  output files and not constantly rebuild every time.

* Include the podman version number in the Windows-installer target
  in case a user downloads multiple releases.

* Include a subdirectory containing the podman version number for
  both `tar.gz` and `zip` targets.  This prevents users clobbering
  existing directories when un-archiving from releases.

Signed-off-by: Chris Evich <cevich@redhat.com>

docs/remote-docs.sh

@@ -6,7 +6,17 @@ PLATFORM=$1                         ## linux, windows or darwin
 TARGET=${2}                         ## where to output files
 SOURCES=${@:3}                      ## directories to find markdown files
 
-PODMAN=${PODMAN:-bin/podman-remote} ## location overridden for testing
+# Overriden for testing.  Native podman-remote binary expected filepaths
+if [[ -z "$PODMAN" ]]; then
+    case $(env -i HOME=$HOME PATH=$PATH go env GOOS) in
+        windows)
+            PODMAN=bin/windows/podman.exe ;;
+        darwin)
+            PODMAN=bin/darwin/podman ;;
+        *)  # Assume "linux"
+            PODMAN=bin/podman-remote ;;
+    esac
+fi
 
 function usage() {
     echo >&2 "$0 PLATFORM TARGET SOURCES..."