Convert DOS (CRLF) source files to Unix (LF) line endings

Excluded `examples/pybullet/gym/pybullet_data/` which has many (3000+)
CRLF data files (obj, mtl, urdf), and `docs/pybullet_quickstart_guide`
which has generated .js and .htm files with CRLF line endings too.

build3/Android/jni/Application.mk

@@ -1,7 +1,7 @@
-APP_MODULES := libBullet
-APP_ABI := armeabi-v7a
-APP_OPTIM := release
-
-#We only need STL for placement new (#include <new>) 
-#We don't use STL in Bullet
-APP_STL                 := stlport_static
+APP_MODULES := libBullet
+APP_ABI := armeabi-v7a
+APP_OPTIM := release
+
+#We only need STL for placement new (#include <new>) 
+#We don't use STL in Bullet
+APP_STL                 := stlport_static