stand/common: Add file_addbuf()
libsa: Add support for timestamp logging (tslog)
stand/common: Add support for timestamp logging (tslog)
i386/loader: Call tslog_init
efi/loader: Call tslog_init (+ bugfix)
stand/common command_boot: Pass tslog to kernel
kern_tslog: Include tslog data from loader
loader: Use tslog to instrument some functions
Add userland boot profiling to TSLOG (+ bugfix)

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(cherry picked from commit 60a978be)
(cherry picked from commit e193d3ba)
(cherry picked from commit c8dfc327)
(cherry picked from commit c4b65e95)
(cherry picked from commit f49381cc)
(cherry picked from commit 537a44bf)
(cherry picked from commit fe51b5a7)
(cherry picked from commit 313724ba)
(cherry picked from commit 46dd801a)
(cherry picked from commit 52e125c2)
(cherry picked from commit 19e4f2f2)