RFC: Alternate names for ELF substitution sequences

[Daniel Jacobowitz]

I recently had to build GDB with an rpath containing "$ORIGIN" (which
has magic significance to the dynamic loader).  This involved a
ludicrous and unpredictable number of backslashes.

How can we make this easier?  For instance, is there a character or
sequence we are willing to sacrifice from rpaths that isn't so
shell-active?  Perhaps "={": -rpath "={ORIGIN}" -> "${ORIGIN}".

-- 
Daniel Jacobowitz
CodeSourcery