Makefile.am (extra_target_headers): New list of all target files built with ad hoc naming rules.
* include/Makefile.am (extra_target_headers): New list of all
target files built with ad hoc naming rules.
(stamp-*): Handle LN_S failure in manner portable across make
implementations.
(install-data-local): Install header files from human-maintained
file lists and directory components instead of non-robust find.
* include/Makefile.in: Rebuilt.