openssl: fix xcode build
OpenSSL: do not install documentation
Add OpenSSL 1.0.1i
Add OpenSSL 1.0.1j
Boost mingw
Add GSL
Add GSL example
Add clapack
Add clapack example
ZLIB update
Add ZLIB example
Merge branch 'zlib' into tiff
Add TIFF
Forward HUNTER_BASE value to all subprojects

Since HUNTER_BASE can have custom location (e.g. testing)
it need to be added to external toolchain.
Add TIFF example
Add libcxx
Merge branch 'develop' into gsl
Broken package: GSL + iOS
Update travis config
Remove CLAPACK/iOS test