Log Message:
Update comms/gammu to 1.37.0.

Changes:
20160203 - 1.37.0
[-] * Improved compatibility with ZTE MF190.
[-] * Improved compatibility with Huawei E1750.
[-] * Improved compatibility with Huawei E1752.
[-] * Increased detail of reported errors from SMSD.

20151208 - 1.36.8
[-] * Changed default value for ReceiveFrequency.
[-] * Fixed compatibility for PostgreSQL.
[-] * Fixed build failure with all disabled SMSD backends.
[-] * Documentation improvements.
[-] * Fixed mixing C++ code with SMSD.

20151129 - 1.36.7
[-] * Support devices which do not report full network status.
[-] * Disable Huawei unsolicited messages on startup.
[-] * Various improvements for Huawei modems.
[-] * Fixed compilation on Windows.
[-] * Fixed regression with Siemens AX75.
[-] * Improved decoding of USSD responses.
[-] * Properly decode emojis to console or files backend.
[+] * Added support for proxying the connection through arbitrary command.
[+] * SMSD now tracks retries count per message.

20151012 - 1.36.6
[-] * Fixed installation of bash-completion script.
[-] * Fixed timezone manipulation in SMSD.
[-] * Documentation improvements.
[-] * Fixed licensing of helper/win32-dirent.*.
[*] * Increased default speed for AT connection to 115200.
[*] * Improve AT module initialization.

20150826 - 1.36.5
[-] * Properly use timezones with SQLite in SMSD.
[-] * Improve support for Huawei E1752.
[-] * Fixed compilation on distros with old Glib.