Remove ravi-external-libs on OSX

Author: Dibyendu Majumdar

build/osx_build.sh

@@ -7,7 +7,7 @@ export LUA_CPATH="$LUA_CPATH;$RAVI_HOME/lib/?.so;$RAVI_HOME/lib/lib?.so"
 # Note following assumes brew install openssl
 export OPENSSL_ROOT_DIR=/usr/local/opt/openssl
 
-for dir in ravi-external-libs ravi ravi-cjson ravi-filesystem ravi-lpeglabel ravi-luasocket ravi-moses ravi-penlight ravi-torch-paths ravi-torch7-sys ravi-torch7 ravi-torch7-xlua ravi-torch7-nn ravi-torch7-optim ravi-torch7-autograd ravi-torch-cephes ravi-libuv-luv ravi-protobuf ravi-luaossl; do
+for dir in ravi ravi-cjson ravi-filesystem ravi-lpeglabel ravi-luasocket ravi-moses ravi-penlight ravi-torch-paths ravi-torch7-sys ravi-torch7 ravi-torch7-xlua ravi-torch7-nn ravi-torch7-optim ravi-torch7-autograd ravi-torch-cephes ravi-libuv-luv ravi-protobuf ravi-luaossl; do
 	echo "Building $dir"
 	cd $dir && rm -rf build && mkdir build && cd build && cmake -DCMAKE_INSTALL_PREFIX=$RAVI_HOME .. && make install && cd ../..
 done