Fix build failures caused by not compiling open_transformer.c (#2)

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
grep: don't bail out on first mismatch if '-w' option is set

Signed-off-by: Bartosz Golaszewski <bartekgola@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
volume_id_internal.h: drop unoptimized byteswap routines

function                                             old     new   delta
volume_id_probe_hfs_hfsplus                          802     627    -175

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>