Create a new src/priv/ directory for private algorithms.

* README: Document it.
* configure.ac: Generate src/priv/Makefile.
* src/Makefile.am: Recurse into priv/.
* src/priv/Makefile.am: New file.
* src/misc/acccompl.cc, src/misc/acccompl.hh,
src/misc/accconv.cc, src/misc/accconv.hh: Move to...
* src/priv/acccompl.cc, src/priv/acccompl.hh,
src/priv/accconv.cc, src/priv/accconv.hh: ... here.
* src/misc/Makefile.am: Adjust.
* src/tgbaalgos/scc.cc, src/tgbaalgos/simulation.cc: Adjust
includes.
* src/sanity/style.test: Make sure no public header
file include a private one.

src/misc/Makefile.am

@@ -29,8 +29,6 @@ nodist_misc_HEADERS = _config.h
 DISTCLEANFILES = _config.h
 
 misc_HEADERS = \
-  acccompl.hh \
-  accconv.hh \
   bareword.hh \
   bddalloc.hh \
   bddlt.hh \
@@ -58,8 +56,6 @@ misc_HEADERS = \
 
 noinst_LTLIBRARIES = libmisc.la
 libmisc_la_SOURCES = \
-  acccompl.cc \
-  accconv.cc \
   bareword.cc \
   bddalloc.cc \
   bddop.cc \