librsvg: update to 2.48.1.

Version 2.48.1

- #129 - Fix baseline-shift for simple subscripts/superscripts and
  absolute offsets.  This should fix a lot of Wikimedia images with
  formulas.

- #548 - Support images with data: URLs that don't have a MIME-type.
  This fixes some Open Clip Art images generated by old versions
  of Adobe Illustrator.

- Fix build of the test suite on Windows (Chun-wei Fan).

- Support running the rsvg_internals tests on Windows (Chun-wei Fan).

graphics/librsvg/Makefile

@@ -1,7 +1,6 @@
-# $NetBSD: Makefile,v 1.118 2020/03/14 22:40:47 tnn Exp $
+# $NetBSD: Makefile,v 1.119 2020/03/31 17:31:02 wiz Exp $
 
-DISTNAME=	librsvg-2.48.0
-PKGREVISION=	1
+DISTNAME=	librsvg-2.48.1
 CATEGORIES=	graphics gnome
 MASTER_SITES=	${MASTER_SITE_GNOME:=sources/librsvg/${PKGVERSION_NOREV:R}/}
 EXTRACT_SUFX=	.tar.xz
@@ -26,16 +25,15 @@ PKGCONFIG_OVERRIDE=	librsvg.pc.in
 
 TEST_TARGET=		check
 
-CARGO_CRATE_DEPENDS+=	aho-corasick-0.7.9
+CARGO_CRATE_DEPENDS+=	aho-corasick-0.7.10
 CARGO_CRATE_DEPENDS+=	alga-0.9.3
 CARGO_CRATE_DEPENDS+=	approx-0.3.2
 CARGO_CRATE_DEPENDS+=	atty-0.2.14
 CARGO_CRATE_DEPENDS+=	autocfg-1.0.0
 CARGO_CRATE_DEPENDS+=	bitflags-1.2.1
 CARGO_CRATE_DEPENDS+=	block-0.1.6
-CARGO_CRATE_DEPENDS+=	bstr-0.2.11
+CARGO_CRATE_DEPENDS+=	bstr-0.2.12
 CARGO_CRATE_DEPENDS+=	byteorder-1.3.4
-CARGO_CRATE_DEPENDS+=	c2-chacha-0.2.3
 CARGO_CRATE_DEPENDS+=	cairo-rs-0.8.1
 CARGO_CRATE_DEPENDS+=	cairo-sys-rs-0.9.2
 CARGO_CRATE_DEPENDS+=	cast-0.2.3
@@ -91,7 +89,7 @@ CARGO_CRATE_DEPENDS+=	itertools-0.8.2
 CARGO_CRATE_DEPENDS+=	itoa-0.4.5
 CARGO_CRATE_DEPENDS+=	language-tags-0.2.2
 CARGO_CRATE_DEPENDS+=	lazy_static-1.4.0
-CARGO_CRATE_DEPENDS+=	libc-0.2.67
+CARGO_CRATE_DEPENDS+=	libc-0.2.68
 CARGO_CRATE_DEPENDS+=	libm-0.2.1
 CARGO_CRATE_DEPENDS+=	locale_config-0.3.0
 CARGO_CRATE_DEPENDS+=	log-0.4.8
@@ -102,13 +100,13 @@ CARGO_CRATE_DEPENDS+=	matches-0.1.8
 CARGO_CRATE_DEPENDS+=	matrixmultiply-0.2.3
 CARGO_CRATE_DEPENDS+=	maybe-uninit-2.0.0
 CARGO_CRATE_DEPENDS+=	memchr-2.3.3
-CARGO_CRATE_DEPENDS+=	memoffset-0.5.3
+CARGO_CRATE_DEPENDS+=	memoffset-0.5.4
 CARGO_CRATE_DEPENDS+=	nalgebra-0.19.0
 CARGO_CRATE_DEPENDS+=	new_debug_unreachable-1.0.4
 CARGO_CRATE_DEPENDS+=	nodrop-0.1.14
 CARGO_CRATE_DEPENDS+=	num-complex-0.2.4
 CARGO_CRATE_DEPENDS+=	num-integer-0.1.42
-CARGO_CRATE_DEPENDS+=	num-rational-0.2.3
+CARGO_CRATE_DEPENDS+=	num-rational-0.2.4
 CARGO_CRATE_DEPENDS+=	num-traits-0.2.11
 CARGO_CRATE_DEPENDS+=	num_cpus-1.12.0
 CARGO_CRATE_DEPENDS+=	objc-0.2.7
@@ -129,12 +127,12 @@ CARGO_CRATE_DEPENDS+=	pin-utils-0.1.0-alpha.4
 CARGO_CRATE_DEPENDS+=	pkg-config-0.3.17
 CARGO_CRATE_DEPENDS+=	ppv-lite86-0.2.6
 CARGO_CRATE_DEPENDS+=	precomputed-hash-0.1.1
-CARGO_CRATE_DEPENDS+=	proc-macro-hack-0.5.11
-CARGO_CRATE_DEPENDS+=	proc-macro-nested-0.1.3
+CARGO_CRATE_DEPENDS+=	proc-macro-hack-0.5.14
+CARGO_CRATE_DEPENDS+=	proc-macro-nested-0.1.4
 CARGO_CRATE_DEPENDS+=	proc-macro2-1.0.9
 CARGO_CRATE_DEPENDS+=	quote-1.0.3
 CARGO_CRATE_DEPENDS+=	rand-0.7.3
-CARGO_CRATE_DEPENDS+=	rand_chacha-0.2.1
+CARGO_CRATE_DEPENDS+=	rand_chacha-0.2.2
 CARGO_CRATE_DEPENDS+=	rand_core-0.3.1
 CARGO_CRATE_DEPENDS+=	rand_core-0.4.2
 CARGO_CRATE_DEPENDS+=	rand_core-0.5.1
@@ -148,27 +146,27 @@ CARGO_CRATE_DEPENDS+=	rayon-1.3.0
 CARGO_CRATE_DEPENDS+=	rayon-core-1.7.0
 CARGO_CRATE_DEPENDS+=	rctree-0.3.3
 CARGO_CRATE_DEPENDS+=	rdrand-0.4.0
-CARGO_CRATE_DEPENDS+=	regex-1.3.4
-CARGO_CRATE_DEPENDS+=	regex-automata-0.1.8
-CARGO_CRATE_DEPENDS+=	regex-syntax-0.6.16
+CARGO_CRATE_DEPENDS+=	regex-1.3.6
+CARGO_CRATE_DEPENDS+=	regex-automata-0.1.9
+CARGO_CRATE_DEPENDS+=	regex-syntax-0.6.17
 CARGO_CRATE_DEPENDS+=	rustc_version-0.2.3
-CARGO_CRATE_DEPENDS+=	ryu-1.0.2
+CARGO_CRATE_DEPENDS+=	ryu-1.0.3
 CARGO_CRATE_DEPENDS+=	same-file-1.0.6
 CARGO_CRATE_DEPENDS+=	scopeguard-1.1.0
 CARGO_CRATE_DEPENDS+=	selectors-0.22.0
 CARGO_CRATE_DEPENDS+=	semver-0.9.0
 CARGO_CRATE_DEPENDS+=	semver-parser-0.7.0
-CARGO_CRATE_DEPENDS+=	serde-1.0.104
-CARGO_CRATE_DEPENDS+=	serde_derive-1.0.104
+CARGO_CRATE_DEPENDS+=	serde-1.0.105
+CARGO_CRATE_DEPENDS+=	serde_derive-1.0.105
 CARGO_CRATE_DEPENDS+=	serde_json-1.0.48
 CARGO_CRATE_DEPENDS+=	servo_arc-0.1.1
-CARGO_CRATE_DEPENDS+=	siphasher-0.3.1
+CARGO_CRATE_DEPENDS+=	siphasher-0.3.2
 CARGO_CRATE_DEPENDS+=	slab-0.4.2
 CARGO_CRATE_DEPENDS+=	smallvec-1.2.0
 CARGO_CRATE_DEPENDS+=	stable_deref_trait-1.1.1
 CARGO_CRATE_DEPENDS+=	string_cache-0.8.0
 CARGO_CRATE_DEPENDS+=	string_cache_codegen-0.5.1
-CARGO_CRATE_DEPENDS+=	syn-1.0.16
+CARGO_CRATE_DEPENDS+=	syn-1.0.17
 CARGO_CRATE_DEPENDS+=	tendril-0.4.1
 CARGO_CRATE_DEPENDS+=	textwrap-0.11.0
 CARGO_CRATE_DEPENDS+=	thin-slice-0.1.1