Doc fixes

[Sylvain Beucler]

Hi,

I added getopt in my packages, following the documentation. Here are
the fixes I needed in Section 2.1:

LIBADD = lib/libgnu.la
becomes
LDADD = $(top_builddir)/lib/libgnu.a

- no .la in the common case

- switching to LDADD (LIBADD doesn't seem to work, app_LIBADD produces
  an Automake error)

- adding $(top_builddir)


Note: even when "adding `gl_SOURCE_BASE(DIRECTORY)' and
`gl_M4_BASE(DIRECTORY)' to your configure.ac." it seems I need to
explicitely specify --source-base=DIRECTORY and --m4-base=DIRECTORY
during the first import.


Note2: nice Git work in gnulib-tool :) But ignoring almost all files
in .gitignore is a bit puzzling - git status won't show them and
you're likely to miss them during the import. Why is it the case?

-- 
Sylvain