Pass consistent arguments to configure script if build_style=gnu_configure,

so that we can install the info files into the same directory, as well
as not requiring passing stuff from random templates.

While here use merge-info from Xstow to merge two info dir files.

As bonus I added git-1.6.0.2 and its dependencies, based on work done by
morr@. Thank you!

A git package built with pkgfs is fully functional now, enjoy!

--HG--
extra : convert_revision : 97c0b5c4b24cc6d63594f0f467349b13ea553980

templates/ruby-1.8.7-p72.tmpl

@@ -3,8 +3,7 @@ pkgname=ruby-1.8.7-p72
 extract_sufx=".tar.bz2"
 url=ftp://ftp.ruby-lang.org/pub/ruby/1.8
 build_style=gnu_configure
-configure_args="--enable-pthread --enable-shared
- --exec-prefix=$PKGFS_DESTDIR/$pkgname"
+configure_args="--enable-pthread --enable-shared"
 short_desc="Ruby programming language"
 maintainer="Daniel Horecki <morr@morr.pl>"
 checksum=07bf0d6987ba111aed988093c569fb66ba54891b