Add thirdparty libraries as git submodules.

jbig2dec latest
freetype 2.4.10
jpeg 9
openjpeg 1.5.0
zlib 1.2.7

Update MSVC projects for thirdparty libraries as submodules.

Improve thirdparty library availability checks in Makethird by
checking for the existence of a README file instead of just the directory,
since a checkout without active git submodules has empty directories
for the third party libraries.

1 files changed, 15 insertions, 0 deletions

diff --git a/thirdparty/README b/thirdparty/README
new file mode 100644
index 00000000..efd375d2
--- /dev/null
+++ b/thirdparty/README
@@ -0,0 +1,15 @@
+This directory holds third party libraries as git submodules.
+
+If the directories are empty, the makefile based build will try
+to use system libraries instead.
+
+To set up the third party modules for building from git:
+
+	$ git submodule init
+	$ git submodule update
+
+Then after each pull (to make sure they're up to date):
+
+	$ git submodule update
+
+Do NOT edit files in the submodule checkouts unless you know what you're doing.