Add jenkinsfile (#196)

This patch adds Jenkinsfile for testing at the private CI server at NAIST.

The existing settings for travis and appveyor are not changed yet, since I'm still not very confident on how well the private server will work.
The new Jenkinsfile includes testing for AArch64+SVE, Intel Compiler with SDE, FMA4, gcc-4.8, static libs on mac and windows, and PowerPC VSX. Some of these tests are redundant, but these are actually testing of the CI server.
The results of builds at the private CI server can be viewed by anyone who has a GitHub account.