Import the fix-gnulib history from cdecl99.
* 'fix-gnulib' of /home/nbowler/projects/cdecl99:
Better document fix-gnulib.
Make fix-gnulib only need a single output file.
Simplify glconfig include mechanism.
Mangle spliced makefile lines in Gnulib correctly.
Avoid gratuitous library dependencies linking gnulib.
Rewrite Gnulib symbols to be in libcdecl's namespace.
Split gnulib_headers into 3 variables.
Move all Gnulib CLEANFILES variables to the end of the makefile.
Handle gl_LIBOBJS/gl_LTLIBOBJS correctly.
Eliminate use of BUILT_SOURCES from Gnulib.
Integrate Gnulib non-recursively.