replace dots in imported files

Hmm somehow my forced push removed the "quick" difference view (changed all instead 3 lines).

I replaced:
```blitzmax
	Method MungAppDecl(app:TAppDecl)
..
		Else If opt_buildtype = BUILDTYPE_MODULE Then
...
			Local mung:String = "_bb_" + opt_modulename + "_" + StripExt(StripDir(opt_filepath).ToLower())
			app.munged = mung.Replace(".", "_")
		Else
...
			app.munged = "bb_" + dir + "_" + StripExt(file)
		EndIf
	End Method
```

with

```blitzmax
	Method MungAppDecl(app:TAppDecl)
...
		Else If opt_buildtype = BUILDTYPE_MODULE Then
...
			app.munged = "_bb_" + opt_modulename + "_" + StripExt(StripDir(opt_filepath).ToLower())
		Else
...
				app.munged = "bb_" + dir + "_" + StripExt(file)
..
		EndIf
		app.munged = app.munged.Replace(".", "_")
	End Method
```