Print /proc/cpuinfo of travis VM
Add InstanClient on Win paths to FindOracle.cmake

Having InstanClient SDK unpacked in C:\instantclient_11_2, the lookup
seems to work:
-- ORACLE_INCLUDE_DIR = C:/instantclient_11_2/sdk/include
-- ORACLE_LIBRARIES       =
c:/instantclient_11_2/sdk/lib/msvc/ociw32.lib
C:/instantclient_11_2/sdk/lib/msvc/oraocci11.lib
C:/instantclient_11_2/sdk/lib/msvc/ociw32.lib
Define std::strtoull for MSVC compiler.

This function is used in Oracle backend.
Change g++ to gcc

Suuddently, something got broken on travis. It might be incorrect compiler directive. Apparently, g++ should read gcc according to the docs: http://about.travis-ci.org/docs/user/languages/cpp/
Fix .travis.yml
Update .travis.yml to disable cpuinfo
Merge pull request #79 from pbondo/master.
Add JSON support for PostgreSQL with related test case.
Close #77
Close #79
Tweak test_json skipped message