helpers: simplify flat output format

Always print values as strings instead of Python literals. This
massively simplifies the parsing in scripts. Only newlines are escaped
with backslash continuations. It now mostly resembles INI files that are
parsed by many other tools and libraries.

Author: jkloetzke

pym/bob/cmds/helpers.py

@@ -33,6 +33,7 @@ def dumpFlat(doc, prefix=""):
             ret.extend(dumpFlat(v, "{}[{}]".format(prefix, i)))
             i += 1
     else:
-        ret = [ "{}={!r}".format(prefix, doc) ]
+        doc = str(doc).replace('\n', '\\n')
+        ret = [ "{}={}".format(prefix, doc) ]
 
     return ret