[SHELL] Fixed switching between BT shell and JIMTCL shell support.
[SHELL] date - Added a date command to print the current system time.
[TIMERS] System Tim API should cause an atomic operation when reading from the system timer.
[ARCH] ARM - types - Corrected BT_s16 type.
[TIME] Added new time sub-system.
[TIME] bt_time_to_tm() api now accepts bt_tm struct.
[PULL] Merge branch 'feature/wl.time.subsystem' closes #10
[FS] Added symbol exports.
[GPIO] Added symbol exports.
[SYSLOG] Added symbol exports.
[PROCESS] Added symbol exports.
[DEVMAN] Added symbol exports.
[MM] Added symbol exports.
[NET] Added symbol exports.
[SHELL] Added symbol exports.
[HANDLES] Added symbol exports.
[COLLECTIONS] Added symbol exports.
[HASH] Added symbol exports.
[MM] Updated symbol exports.
[HELPERS] Added symbol exports.