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, 0 insertions, 0 deletions

diff --git a/thirdparty/jbig2dec b/thirdparty/jbig2dec
new file mode 160000
+Subproject 7a82fc0abd135e08875ec4941ba43e832bc1b7f