fix Makefile.hrpsys-base, git checkout $(GIT_REVISION) after git reset --hard
Merge pull request #78 from k-okada/master

overwride target patched Makefile.hrpsys-base
pass EXTRA RTC setting by string
Merge pull request #80 from snozawa/pass_extra_rtc_setting_by_string

Passed. Merged.
Merge remote-tracking branch 'origin/master' into use_hrpsys_config_for_seq_sample
import imp package and roslib