* added missing param in call to gsm48_rx_bcch
* added 'extern' to declarations of rsl_rlm_cause_strs and target_board
* added several 'const' for strings
* removed useless 'bufptr,' from hexdump
(From: itsme <itsme@xs4all.nl>)
* introduce a new 'l1ctl_hdr' structure common to all messages
on this interface
* use struct l1ctl_hdr in both the firmware and layer23
* add a new L1CTL_PM_REQ request for performing layer23-initiated
power measurements (firmware does not implement them yet)
* remove linuxlist.h copy and use osmocore
* don't put 'struct gsm_time' into l1ctl packets
* include rx_level and snr for each burst in l1ctl
* properly build libosmocore.a for target
* move gsmtime functions into libosmocore
* move ctype.h to standard location
* use GSMTAP for uplink frames (generated by layer23; sent to L1)
* only use GSMTAP if the user specifies the '-i dstip' arguments
* properly encode the GSMTAP channel type
* requires GSMTAP protocol version 0x02 (see next commit for wireshark patch)