Added gtirb-capstone per issue #1840

quicklisp · quicklisp · commit 89dafee916bd · 2020-06-10T09:12:04.000-04:00
diff --git a/projects/gtirb-capstone/source.txt b/projects/gtirb-capstone/source.txt
@@ -0,0 +1 @@
+git https://github.com/grammatech/gtirb-capstone.git

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1 @@`
	`1`	`+git https://github.com/grammatech/gtirb-capstone.git`