Added support for building packages that use GNU or BSD Makefiles

and extraction of zip distfiles via a new helper:
unzip-extraction.sh.

When a new template uses extract_sufx=".zip" and the unzip command
is not found on PKGFS_MASTERDIR/bin/unzip, the unzip package will
be installed automatically.

Also add jasper-1.900.1 template that uses a zip distfile.

--HG--
extra : convert_revision : a979bdd3aef82d64e490606c21aa8f557d76fdbd

templates/jasper-1.900.1.tmpl

@@ -0,0 +1,17 @@
+# Template build file for 'jasper-1.900.1'.
+pkgname=jasper-1.900.1
+extract_sufx=".zip"
+url=http://www.ece.uvic.ca/~mdadams/jasper/software
+build_style=gnu_configure
+export CPPFLAGS="-I$PKGFS_MASTERDIR/include"
+configure_args="--enable-shared --without-x --disable-opengl"
+short_desc="Software-based reference implementation of the JPEG-2000 codec"
+maintainer="Juan RP <xtraeme@gmail.com>"
+checksum=fb2c188abf5b8c297078ac1f913101734f72db5c
+long_desc="
+  The JasPer Project is a collaborative effort between Image Power, Inc.
+and the University of British Columbia. The objective of this project is
+to develop a software-based reference implementation of the codec
+specified in the JPEG-2000 Part-1 standard (i.e., ISO/IEC 15444-1).This
+software has also been submitted to the ISO for inclusion in the JPEG-2000
+Part-5 standard (as an official reference implementation)."

templates/unzip-5.52-fix-unzipsfx.diff

@@ -0,0 +1,27 @@
+$NetBSD: patch-ad,v 1.1 2006/11/03 07:53:55 rillig Exp $
+
+unzipsfx does not need libz, so a special compile rule is needed for it.
+
+--- unix/Makefile.orig	Mon Oct 30 22:45:35 2006
++++ unix/Makefile	Mon Oct 30 22:48:02 2006
+@@ -87,7 +87,7 @@
+ OBJS = $(OBJS1) $(OBJS2) $(OBJS3) $M$O
+ LOBJS = $(OBJS)
+ OBJSDLL = $(OBJS:.o=.pic.o) api.pic.o
+-OBJX = unzipsfx$O $(CRC32)$O crctab_$O crypt_$O extract_$O fileio_$O \
++OBJX = unzipsfx$O crc32_$O crctab_$O crypt_$O extract_$O fileio_$O \
+ 	globals_$O inflate_$O match_$O process_$O ttyio_$O $M_$O
+ LOBJX = $(OBJX)
+ OBJF = funzip$O $(CRC32)$O cryptf$O globalsf$O inflatef$O ttyiof$O
+@@ -306,6 +306,11 @@
+ 	-$(CP) unzip.c unzipsfx.c
+ 	$(CC) -c $(CF) -DSFX unzipsfx.c
+ 	$(RM) unzipsfx.c
++
++crc32_$O:	crc32.c $(UNZIP_H) zip.h			# unzipsfx only
++	-$(CP) crc32.c crc32_.c
++	$(CC) -c $(CF) -DSFX crc32_.c
++	$(RM) crc32_.c
+ 
+ crctab_$O:	crctab.c $(UNZIP_H) zip.h
+ 	-$(CP) crctab.c crctab_.c

templates/unzip-5.52.tmpl

@@ -0,0 +1,38 @@
+# Template file for 'unzip-5.52'
+pkgname=unzip-5.52
+patch_files=$pkgname-fix-unzipsfx.diff
+wrksrc=$pkgname
+distfiles=unzip552
+extract_sufx=".tgz"
+url=ftp://ftp.info-zip.org/pub/infozip/src/
+build_style=gnu_makefile
+make_cmd="$PKGFS_MASTERDIR/bin/gmake"
+make_build_args="-f unix/Makefile"
+make_build_target="generic_zlib unzipsfx"
+export CFLAGS="-I. -DUNIX -Dunix -DUSE_UNSHRINK"
+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."