Bulk data collection support

https://github.com/v-zhuravlev/libzbxmodbus#5-bulk-data-collection

New datatypes: SIGNED INT32, DOUBLE, UINT64. Support for 4 type of endianess: BE,LE,MLE,MBE.

v0.8

 implemented 32bit float for all 4 types of endianess: LE, BE, MBE, M…

libzbxmodbus 0.7: Added experimental support for 64bit datatypes

Added 64bit datatypes:

• SIGNED INT64 type - 'S'
• FLOAT64 type - 'd'
• UNSIGNED INT64 use capital 'I' and Numeric(Unsigned) in Zabbix
  see README for more details.

libzbxmodbus 0.6

• Encapsulated Modbus (RTU over TCP) support. define such connection with 'enc://' prefix like 'enc://192.168.0.1'
• TCP port can be set for the connection: like '192.168.0.1:5005'
• Improved locking for multiple resources
• libmodbus 3.1.4 as nested module
• introduced shorter alias name for modbus_read_registers : modbus_read
  See README for more details.

libzbxmodbus 0.5

Timeout from zabbix config file is now used for setting modbus timeouts

libzbxmodbus 0.4

• Zabbix 3.2 support. Use ./configure --enable-zabbix-3.2
• small fixes in configure.ac

libzbxmodbus 0.3: Zabbix 3.0 support

• Zabbix 3.0 support
• New signed integer data type support