repair ODBC abstract layer
fix privacy related queries
fix ODBC layer integration with MAM
fix ODBC layer integration with MAM MUC
ODBC layer support on travis
move odbc_server_type parameter to template
fix handling seconds form mod_last

ODBC driver returns interger if the column is of type integer
try Erlang/OTP R16B03

only one build on R15B03
fix count active users and users list for ODBC
delegate some mssql specific queries to dedicated module

while compiling with make one can
specify additional parameter OPTS="-D mssql"
which will be passed to rebar
f.e `make OPTS="-d mssq"`
fix matching of `select count` results

MSSQL returns nice integer
while other DBs binary string with number inside
add mssql 2012 schema file
adjust vcard search to MSSQL
addjust MAM to work with MSSQL 2012
use function result_to_integer from ejabberd_odbc
fix indentation in odbc_queries modules
use dynamically compiled odbc type helper

instead of compile time functions
Merge pull request #275 from esl/mssql-support

repair ODBC abstraction layer