Mega patch to improve how build dependencies are handled and

how packages are found.

First: I removed all these *-deps.db files and only a single file
is used now "build-depends.db"; it's smaller and will be easier
to handle in the future... when "run-depends.db" is added :-)

Second: there's no need to specify version of package anymore;
before you had to do:

	$ pkgfs.sh install git-1.6.0.2

now you only do:

	$ pkgfs.sh install git

This will read the variables located at PKGFS_TEMPLATESDIR/git.tmpl
and will the install the version that is there.

--HG--
extra : convert_revision : 9e3e5d70965a69c76f59e322b7c7b674d627af52

templates/pkg-config.tmpl

@@ -0,0 +1,14 @@
+# Template build file for 'pkg-config'
+pkgname=pkg-config
+version=0.23
+extract_sufx=".tar.gz"
+url=http://pkgconfig.freedesktop.org/releases
+build_style=gnu_configure
+configure_args="--with-pc-path=$PKGFS_MASTERDIR/lib/pkgconfig"
+short_desc="System for managing library compile/link flags"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=0aa5565430d609319917ac2c8ffeaa5e4a509489
+long_desc="
+ pkg-config is a system for managing library compile/link flags that
+ works with automake and autoconf.  It replaces the ubiquitous
+ *-config scripts you may have seen with a single tool."