build system proposals for gnome2-branch

[Christian Stimming]

Hi all,

ok, now I've put together a proposal of what can be changed in the 
gnome2-branch.  I'd suggest

- removal of acinclude.m4 -- it contains heaps of very old, legacy macros

- adding 2-3 unavoidable legacy macros into file macros/legacy_macros.m4 
(attached)

- removal of ltmain.sh -- it should be installed by running libtoolize

- changing of macros/autogen.sh, diff attached. 

The changes to autogen.sh are

-	ACLOCAL_FLAGS="-I $GNOME2_PATH/share/aclocal $ACLOCAL_FLAGS"
+	# if GNOME2_PATH contains several directories, separate them properly
+	TMP_PATH=`echo $GNOME2_PATH | sed 's/:/ -I /g' `
+	ACLOCAL_FLAGS="-I $TMP_PATH/share/aclocal $ACLOCAL_FLAGS"

to tolerate env variable GNOME2_PATH=/opt/gnome:/usr/bla/bla, and then 
commenting in the libtoolize calls. Oh, and most importantly fix one typo

-      macrosdir=`find . -name macros -print`
+      macrodirs=`find . -name macros -print`

If people agree, I would ask to apply this to gnucash-gnome2-dev. I don't have 
time anymore and not for this week, so the end-test should be done by someone 
else.

Regards,

Christian
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