libucl: new package

Libucl is a high performance and flexible JSON/YAML/etc. parser for C.

https://github.com/vstakhov/libucl

[Thomas:
  - remove hash file, should not be used for github downloads
  - rewrap Config.in help text
  - remove trailing white space in Config.in.
  - add missing host-pkgconf dependency, without which the package
    doesn't autoreconf properly.
  - fix license: it is BSD-2c, not just BSD.]

Signed-off-by: Nimai Mahajan <nimaim@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Config.in

@@ -881,6 +881,7 @@ menu "JSON/XML"
 	source "package/jsoncpp/Config.in"
 	source "package/libjson/Config.in"
 	source "package/libroxml/Config.in"
+	source "package/libucl/Config.in"
 	source "package/libxml2/Config.in"
 	source "package/libxmlpp/Config.in"
 	source "package/libxmlrpc/Config.in"

package/libucl/Config.in

@@ -0,0 +1,15 @@
+config BR2_PACKAGE_LIBUCL
+	bool "libucl"
+	help
+	  Universal configuration library parser
+
+	  Libucl is a parser and C API to parse and generate ucl
+	  objects. Libucl consist of several groups of functions:
+	  parser, emitting, conversion, generation, iteration,
+	  validation, and utility. These functions can be used to work
+	  with several formats: JSON, compact JSON, configuration
+	  (nginx like), and YAML. Libucl has clear design that should
+	  be very convenient for reading and writing and makes for an
+	  ideal parser with high performance.
+
+	  https://github.com/vstakhov/libucl

package/libucl/libucl.mk

@@ -0,0 +1,15 @@
+################################################################################
+#
+# libucl
+#
+################################################################################
+
+LIBUCL_VERSION = 0.7.3
+LIBUCL_SITE = $(call github,vstakhov,libucl,$(LIBUCL_VERSION))
+LIBUCL_INSTALL_STAGING = YES
+LIBUCL_AUTORECONF = YES
+LIBUCL_LICENSE = BSD-2c
+LIBUCL_LICENSE_FILES = COPYING
+LIBUCL_DEPENDENCIES = host-pkgconf
+
+$(eval $(autotools-package))