Initial community commit

Src/external_dependencies/openmpt-trunk/include/premake/website/docs/path.getrelative.md

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+The **path.getrelative** function computes a relative path from one directory to another.
+
+```lua
+p = path.getrelative("src", "dest")
+```
+
+### Parameters ###
+
+`src` is the originating directory, `dest` is the target directory. Both may be specified as absolute or relative to the current working directory. The paths do not need to exist on the file system.
+
+### Return Value ###
+
+A relative path from `src` to `dest`.
+
+### Availability ###
+
+Premake 4.0 or later.