Release v1.3.6

Update version v1.3.5

Release v1.3.4

Release v1.3.3

File emulator emulates LPC32x0 MLC controller, demostrates UFFS_ECC_H…

…W_AUTO implementation

Enable new Flash Driver Interface, update flash-interface-example

build for valgrind, fix memory leak in emu

take care bad block for every erase

eliminate the require ending with '/' for dir

Merge branch 'master' into b-uffs-1.3