Revert .travis.yml
build: Android: add -Os to CXXFLAGS to reduce shared object size

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11208 ddefafc4-47db-0310-ae44-fa13212b10f2
build: provide convenience script for configuring on Debian

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11217 ddefafc4-47db-0310-ae44-fa13212b10f2
travis: do not run Coverity with clang builds

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11232 ddefafc4-47db-0310-ae44-fa13212b10f2
travis: force to assume 1 core

git-svn-id: https://svn.resiprocate.org/rep/resiprocate/main@11233 ddefafc4-47db-0310-ae44-fa13212b10f2
travis: temporarily disable Coverity scans until travis-CI integration updated