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/unzip.tmpl

@@ -0,0 +1,39 @@
+# Template file for 'unzip'
+pkgname=unzip
+version=5.52
+patch_files=$pkgname-fix-unzipsfx.diff
+wrksrc=$pkgname-$version
+distfiles=unzip552
+extract_sufx=".tgz"
+url=ftp://ftp.info-zip.org/pub/infozip/src/
+build_style=gnu_makefile
+make_cmd="$PKGFS_MASTERDIR/bin/gmake"
+CFLAGS="-I. -DUNIX -Dunix -DUSE_UNSHRINK"
+make_build_args="-f unix/Makefile"
+make_build_target="generic_zlib unzipsfx"
+short_desc="List, test and extract compressed files in a ZIP archive"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=b749b0923bc4cceaa6f937aef688e9713a84328c
+long_desc="
+ Unzip will list, test, or extract files from a ZIP archive, commonly
+ found on MS-DOS systems.  The default behavior (with no options) is to
+ extract into the current directory (and subdirectories below it) all
+ files from the specified ZIP archive. Unzip is compatible with
+ archives created by PKWARE's PKZIP, but in many cases the program
+ options or default behaviors differ.
+
+ Zipinfo lists technical information about files in a ZIP archive, most
+ commonly found on MS-DOS systems.  Such information includes file access
+ permissions, encryption status, type of compression, version and operating
+ system or file system of compressing program, and the like.
+
+ Funzip acts as a filter; that is, it assumes that a ZIP archive is
+ being piped into standard input, and it extracts the first member from
+ the archive to stdout.  If there is an argument, then the input comes
+ from the specified file instead of from stdin.
+
+ Unzipsfx is a modified version of unzip designed to be prepended to
+ existing ZIP archives in order to form self-extracting archives.
+ Instead of taking its first non-flag argument to be the zipfile(s) to
+ be extracted, unzipsfx seeks itself under the name by which it was
+ invoked and tests or extracts the contents of the appended archive."