ps: fix sscanf format specifier (%l); make uptime unsigned

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
*: reuse more strings

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
mount: whitespace fix. no code changes

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
unzip: add missing fflush; code shrink

function                                             old     new   delta
my_fgets80                                             -      41     +41
unzip_main                                          2291    2242     -49

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Merge remote-tracking branch 'bb/master' into sm-jb-mr1