clarify shell dependencies
The contributed script uses bash features extensively and does not work with ksh.
diff --git a/BUILDING.txt b/BUILDING.txt
index 86fb45d..72aea76 100644
--- a/BUILDING.txt
+++ b/BUILDING.txt
@@ -158,8 +158,8 @@
"legacy-friendly" version of the TigerVNC Server:
cd {build_directory}
- sh {source_directory}/contrib/xorg/build-xorg init
- sh {source_directory}/contrib/xorg/build-xorg build [additional CMake flags]
+ bash {source_directory}/contrib/xorg/build-xorg init
+ bash {source_directory}/contrib/xorg/build-xorg build [additional CMake flags]
build-xorg generates a version of Xvnc that has no external dependencies on the
X11 shared libraries or any other distribution-specific shared libraries. This