user/clisp and experimental/sbcl + deps

Imported clisp from Alpine with its deps, ffcall and libsigsegv.

Created a new package for sbcl with experimental musl patches. It uses clisp for bootstrapping.

experimental/sbcl/APKBUILD

+# Contributor: Lee Starnes <lee@canned-death.us>
+# Maintainer: Lee Starnes <lee@canned-death.us>
+pkgname=sbcl
+pkgver=2.0.3
+pkgrel=0
+pkgdesc="Steel Bank Common Lisp"
+url="http://www.sbcl.org"
+arch="all !armv7"
+license="BSD-2-Clause AND BSD-2-Clause-FreeBSD AND BSD-3-Clause AND MIT"
+depends=""
+makedepends="clisp clisp-dev"
+checkdepends="ed"
+subpackages="$pkgname-doc"
+# Patch provided by Eric Timmons: https://bugs.launchpad.net/sbcl/+bug/1768368
+source="https://sourceforge.net/projects/$pkgname/files/$pkgname/$pkgver/$pkgname-$pkgver-source.tar.bz2
+	musl-libc.patch"
+
+prepare() {
+	default_prepare
+	
+	# run-program test is hard-coded to use /bin/ed but it should be /usr/bin/ed
+	sed -i 's,/bin/ed,/usr/bin/ed,g' tests/run-program.impure.lisp
+}
+
+build() {
+	./make.sh --prefix=/usr --with-dlclose-is-noop --xc-host=clisp
+}
+
+check() {
+	cd tests && sh run-tests.sh
+}
+
+package() {
+	INSTALL_ROOT="$pkgdir"/usr sh install.sh 
+}
+
+sha512sums="c29c115fff0e118e5c05959dd8d73ae876458daeb5ddde67ce485b10e6d1583b1f8a9597b54b45606696ab1b1eea5392dcb09357c83fce31323f2a5a154f2dd1  sbcl-2.0.3-source.tar.bz2
+e6757e4cc623682c501ab5e255a881833ff393efac829ffe9f67fff0a005724c3c03a23352b4c88d58b3d15dbb0cf33c8cc58d72d3795abb2f12a4bca4302165  musl-libc.patch"