profile: Add IF around KDB_INSTALL_PATH declaration

 - Allows profile to be reloaded without an error that KDB_INSTALL_PATH is set
build.sh: Fixes issue #3

 - All required build folders now created in script
build.sh: Minor formatting fix
Fixed echoInf typo and _topdir passed in from script during rpmbuild
Merge pull request #4 from richardgill/improveBuildScript

build: Fixed echoInf typo and _topdir passed in to rpmbuild
Setup tests to run inside docker on circleci
locked down centos version to 7
Merge branch 'master' of github.com:jasraj/q-build into setupCI

Conflicts:
	rpm/build.sh